Misplaced Pages

#627372

209-770: Corbelled vaults, also called false vaults, with horizontally joined layers of stone have been documented since prehistoric times; in the 14th century BC from Mycenae. They were built regionally until modern times. The real vault construction with radially joined stones was already known to the Egyptians and Assyrians and was introduced into the building practice of the West by the Etruscans. The Romans in particular developed vault construction further and built barrel, cross and dome vaults. Some outstanding examples have survived in Rome, e.g.

418-480: A dromos entry. The inclusion of domes, however, represents a wider sense of the word vault. The distinction between the two is that a vault is essentially an arch which is extruded into the third dimension , whereas a dome is an arch revolved around its vertical axis . Pitched-brick vaults are named for their construction, the bricks are installed vertically (not radially) and are leaning (pitched) at an angle: This allows their construction to be completed without

627-581: A Circum Arabian Nomadic Pastoral Complex developed in the period from the climatic crisis of 6200 BC, partly as a result of an increasing emphasis in PPNB cultures upon domesticated animals, and a fusion with Harifian hunter gatherers in the Southern Levant, with affiliate connections with the cultures of Fayyum and the Eastern Desert of Egypt . Cultures practicing this lifestyle spread down

836-402: A Roman counter-offensive two years later ended inconclusively. Ardashīr began leading campaigns into Greater Khurasan as early as 233, extending his power to Khwarazm in the north and Sistan in the south while capturing lands from Gorgan to Abarshahr, Marw, and as far east as Balkh . Ardashir I's son Shapur I continued the expansion of the empire, conquering Bactria and the western portion of

1045-536: A culture contemporaneous with the Cishan and Xinglongwa cultures of about 6000–5000 BC, Neolithic cultures east of the Taihang Mountains , filling in an archaeological gap between the two Northern Chinese cultures. The total excavated area is more than 1,200 square yards (1,000 m ; 0.10 ha), and the collection of Neolithic findings at the site encompasses two phases. Between 3000 and 1900 BC,

1254-515: A division into five periods. They also advanced the idea of a transitional stage between the PPNA and PPNB between 8800 and 8600 BC at sites like Jerf el Ahmar and Tell Aswad . Alluvial plains ( Sumer / Elam ). Low rainfall makes irrigation systems necessary. Ubaid culture originated from 6200 BC. The earliest evidence of Neolithic culture in northeast Africa was found in the archaeological sites of Bir Kiseiba and Nabta Playa in what

1463-412: A dramatic increase in social inequality in most of the areas where it occurred; New Guinea being a notable exception. Possession of livestock allowed competition between households and resulted in inherited inequalities of wealth. Neolithic pastoralists who controlled large herds gradually acquired more livestock, and this made economic inequalities more pronounced. However, evidence of social inequality

1672-570: A general amnesty, which brought Armenia back into the Sassanid Empire. Around 570, "Ma 'd-Karib", half-brother of the King of Yemen, requested Khosrow I's intervention. Khosrow I sent a fleet and a small army under a commander called Vahriz to the area near present Aden , and they marched against the capital San'a'l, which was occupied. Saif, son of Mard-Karib, who had accompanied the expedition, became King sometime between 575 and 577. Thus,

1881-399: A hemispherical dome is cut by four vertical planes, the intersection gives four semicircular arches; if cut in addition by a horizontal plane tangent to the top of these arches, it describes a circle; that portion of the sphere which is below this circle and between the arches, forming a spherical spandrel , is the pendentive , and its radius is equal to the diagonal of the square on which

2090-589: A highly advantageous peace treaty with the new emperor Philip the Arab , by which he secured the immediate payment of 500,000 denarii and further annual payments. Shapur soon resumed the war, defeated the Romans at Barbalissos (253), and then probably took and plundered Antioch . Roman counter-attacks under the emperor Valerian ended in disaster when the Roman army was defeated and besieged at Edessa and Valerian

2299-500: A hunting trip in 309. Following Hormizd II's death, northern Arabs started to ravage and plunder the western cities of the empire, even attacking the province of Fars, the birthplace of the Sassanid kings. Meanwhile, Persian nobles killed Hormizd II's eldest son, blinded the second, and imprisoned the third (who later escaped into Roman territory). The throne was reserved for Shapur II , the unborn child of one of Hormizd II's wives who

SECTION 10

#1732801190628

2508-551: A living tradition in small and extremely remote and inaccessible pockets of West Papua . Polished stone adze and axes are used in the present day (as of 2008 ) in areas where the availability of metal implements is limited. This is likely to cease altogether in the next few years as the older generation die off and steel blades and chainsaws prevail. In 2012, news was released about a new farming site discovered in Munam-ri , Goseong , Gangwon Province , South Korea , which may be

2717-596: A major Byzantine offensive in Armenia was defeated at Anglon . Also in 541, Khosrow I entered Lazica at the invitation of its king, captured the main Byzantine stronghold at Petra , and established another protectorate over the country, commencing the Lazic War . A five-year truce agreed to in 545 was interrupted in 547 when Lazica again switched sides and eventually expelled its Persian garrison with Byzantine help;

2926-712: A member of the Parthian House of Karen , one of the Seven Great Houses of Iran , quickly raised a new force and stopped the Hephthalites from achieving further success. Peroz's brother, Balash , was elected as shah by the Iranian magnates, most notably Sukhra and the Mihranid general Shapur Mihran . Balash (484–488) was a mild and generous monarch, and showed care towards his subjects, including

3135-608: A non-hierarchical system of organization existed is debatable, and there is no evidence that explicitly suggests that Neolithic societies functioned under any dominating class or individual, as was the case in the chiefdoms of the European Early Bronze Age . Possible exceptions to this include Iraq during the Ubaid period and England beginning in the Early Neolithic (4100–3000 BC). Theories to explain

3344-635: A number of battles he crushed them and drove them out beyond the Oxus river in 450. During his eastern campaign, Yazdegerd II grew suspicious of the Christians in the army and expelled them all from the governing body and army. He then persecuted the Christians in his land, and, to a much lesser extent, the Jews . In order to reestablish Zoroastrianism in Armenia, he crushed an uprising of Armenian Christians at

3553-445: A peculiar twisting of the web, where the springing of the wall rib is at K: to these twisted surfaces the term ploughshare vaulting is given. One of the earliest examples of the introduction of the intermediate rib is found in the nave of Lincoln Cathedral , and there the ridge rib is not carried to the wall rib. It was soon found, however, that the construction of the web was much facilitated by additional ribs, and consequently there

3762-637: A rarely used and not very useful concept in discussing Australian prehistory . During most of the Neolithic age of Eurasia , people lived in small tribes composed of multiple bands or lineages. There is little scientific evidence of developed social stratification in most Neolithic societies; social stratification is more associated with the later Bronze Age . Although some late Eurasian Neolithic societies formed complex stratified chiefdoms or even states , generally states evolved in Eurasia only with

3971-410: A rational system of taxation based upon a survey of landed possessions , which his father had begun, and he tried in every way to increase the welfare and the revenues of his empire. Previous great feudal lords fielded their own military equipment, followers, and retainers. Khosrow I developed a new force of dehqans , or "knights", paid and equipped by the central government and the bureaucracy, tying

4180-464: A relatively peaceful era with the Romans, and he even took the young Theodosius II (408–450) under his guardianship. Yazdegerd also married a Jewish princess, who bore him a son called Narsi. Yazdegerd I's successor was his son Bahram V (421–438), one of the most well-known Sasanian kings and the hero of many myths. These myths persisted even after the destruction of the Sasanian Empire by

4389-410: A series of domes carried on pendentives covered over the nave, the chief peculiarities of these domes being the fact that the arches carrying them form part of the pendentives, which are all built in horizontal courses. The intersecting and groined vault of the Romans was employed in the early Christian churches in Rome, but only over the aisles, which were comparatively of small span, but in these there

SECTION 20

#1732801190628

4598-520: A significant portion of their ancestry from the Anatolian hunter-gatherers (AHG), suggesting that agriculture was adopted in site by these hunter-gatherers and not spread by demic diffusion into the region. The Neolithic 1 (PPNA) period began around 10,000 BC in the Levant . A temple area in southeastern Turkey at Göbekli Tepe , dated to around 9500 BC, may be regarded as the beginning of

4807-536: A slight rise in the centre, so as to increase its strength; this enabled the French masons to dispense with the intermediate rib, which was not introduced by them till the 15th century, and then more as a decorative than a constructive feature, as the domical form given to the French web rendered unnecessary the ridge rib, which, with some few exceptions, exists only in England. In both English and French vaulting centering

5016-552: A span of 80 feet (24 m), more than twice that of an English cathedral , so that its construction both from the statical and economical point of view was of the greatest importance. The researches of M. Choisy ( L'Art de bâtir chez les Romains ), based on a minute examination of those portions of the vaults which still remain in situ , have shown that, on a comparatively slight centering, consisting of trusses placed about 10 feet (3.0 m) apart and covered with planks laid from truss to truss, were laid – to begin with – two layers of

5225-800: A strategically critical area for control of the Silk Road . Shapur therefore marched east toward Transoxiana to meet the eastern nomads, leaving his local commanders to mount nuisance raids on the Romans. He crushed the Central Asian tribes, and annexed the area as a new province. In the east around 325, Shapur II regained the upper hand against the Kushano-Sasanian Kingdom and took control of large territories in areas now known as Afghanistan and Pakistan . Cultural expansion followed this victory, and Sasanian art penetrated Transoxiana , reaching as far as China. Shapur, along with

5434-573: A supplementary rib across the church and between the transverse ribs. This resulted in what is known as a sexpartite, or six-celled vault , of which one of the earliest examples is found in the Abbaye-aux-Hommes at Caen . This church, built by William the Conqueror, was originally constructed to carry a timber roof only, but nearly a century later the upper part of the nave walls were partly rebuilt, in order that it might be covered with

5643-758: A term coined in the 1920s by the Australian archaeologist Vere Gordon Childe . One potential benefit of the development and increasing sophistication of farming technology was the possibility of producing surplus crop yields, in other words, food supplies in excess of the immediate needs of the community. Surpluses could be stored for later use, or possibly traded for other necessities or luxuries. Agricultural life afforded securities that nomadic life could not, and sedentary farming populations grew faster than nomadic. However, early farmers were also adversely affected in times of famine , such as may be caused by drought or pests . In instances where agriculture had become

5852-425: A vault. The immense size, however, of the square vault over the nave necessitated some additional support, so that an intermediate rib was thrown across the church, dividing the square compartment into six cells, and called the sexpartite vault The intermediate rib, however, had the disadvantage of partially obscuring one side of the clerestory windows, and it threw unequal weights on the alternate piers, so that in

6061-521: Is a form of vaulting common in Islamic architecture . The 20th century saw great advances in reinforced concrete design. The advent of shell construction and the better mathematical understanding of hyperbolic paraboloids allowed very thin, strong vaults to be constructed with previously unseen shapes. The vaults in the Church of Saint Sava are made of prefabricated concrete boxes. They were built on

6270-550: Is a large body of evidence for fortified settlements at Linearbandkeramik sites along the Rhine , as at least some villages were fortified for some time with a palisade and an outer ditch. Settlements with palisades and weapon-traumatized bones, such as those found at the Talheim Death Pit , have been discovered and demonstrate that "...systematic violence between groups" and warfare was probably much more common during

6479-508: Is another dome, (the dome that one sees from the inside), but of plaster supported by a wood frame. From the inside, one can easily assume that one is looking at the same vault that one sees from the outside. There are two distinctive "other ribbed vaults" (called "Karbandi" in Persian) in India which form no part of the development of European vaults, but have some unusual features; one carries

Vault (architecture) - Misplaced Pages Continue

6688-563: Is better explained by lineal fission and polygyny. The shelter of early people changed dramatically from the Upper Paleolithic to the Neolithic era. In the Paleolithic, people did not normally live in permanent constructions. In the Neolithic, mud brick houses started appearing that were coated with plaster. The growth of agriculture made permanent houses far more common. At Çatalhöyük 9,000 years ago, doorways were made on

6897-470: Is due to the Romans . When two semicircular barrel vaults of the same diameter cross one another their intersection (a true ellipse) is known as a groin vault , down which the thrust of the vault is carried to the cross walls; if a series of two or more barrel vaults intersect one another, the weight is carried on to the piers at their intersection and the thrust is transmitted to the outer cross walls; thus in

7106-540: Is known as a squinch . There is one other remarkable vault, also built by Justinian, in the Church of the Saints Sergius and Bacchus in Constantinople. The central area of this church was octagonal on plan, and the dome is divided into sixteen compartments; of these eight consist of broad flat bands rising from the centre of each of the walls, and the alternate eight are concave cells over the angles of

7315-540: Is now southwest Egypt. Domestication of sheep and goats reached Egypt from the Near East possibly as early as 6000 BC. Graeme Barker states "The first indisputable evidence for domestic plants and animals in the Nile valley is not until the early fifth millennium BC in northern Egypt and a thousand years later further south, in both cases as part of strategies that still relied heavily on fishing, hunting, and

7524-1024: Is still disputed, as settlements such as Çatalhöyük reveal a lack of difference in the size of homes and burial sites, suggesting a more egalitarian society with no evidence of the concept of capital, although some homes do appear slightly larger or more elaborately decorated than others. Families and households were still largely independent economically, and the household was probably the center of life. However, excavations in Central Europe have revealed that early Neolithic Linear Ceramic cultures (" Linearbandkeramik ") were building large arrangements of circular ditches between 4800 and 4600 BC. These structures (and their later counterparts such as causewayed enclosures , burial mounds , and henge ) required considerable time and labour to construct, which suggests that some influential individuals were able to organise and direct human labour – though non-hierarchical and voluntary work remain possibilities. There

7733-648: Is surmised that to the top of the pendentives they were built in horizontal courses of brick, projecting one over the other, the projecting angles being cut off afterwards and covered with stucco in which the mosaics were embedded; this was the method employed in the erection of the Périgordian domes, to which we shall return; these, however, were of less diameter than those of the Hagia Sophia, being only about 40 to 60 feet (18 m) instead of 107 feet (33 m) The apotheosis of Byzantine architecture , in fact,

7942-710: Is taken to overlap with the Pre-Pottery Neolithic A (PPNA) of 10,200–8800 BC. As the Natufians had become dependent on wild cereals in their diet, and a sedentary way of life had begun among them, the climatic changes associated with the Younger Dryas (about 10,000 BC) are thought to have forced people to develop farming. The founder crops of the Fertile Crescent were wheat , lentil , pea , chickpeas , bitter vetch, and flax. Among

8151-653: The Battle of Hormozdgan in 224, Ardashir's dynasty replaced that of the Arsacids and promptly set out to restore the legacy of the Achaemenid Empire by expanding the newly acquired Sasanian dominions. At its greatest territorial extent, the Sasanian Empire encompassed all of modern-day Iran and Iraq and parts of the Arabian Peninsula (particularly Eastern Arabia and South Arabia ), as well as

8360-543: The Battle of Vartanantz in 451. The Armenians, however, remained primarily Christian. In his later years, he was engaged yet again with the Kidarites right up until his death in 457. Hormizd III (457–459), the younger son of Yazdegerd II, then ascended to the throne. During his short rule, he continually fought with his elder brother Peroz I , who had the support of the nobility, and with the Hephthalites in Bactria . He

8569-554: The Bronze Age began about 3500 BC, replacing the Neolithic cultures. Around 10,000 BC the first fully developed Neolithic cultures belonging to the phase Pre-Pottery Neolithic A (PPNA) appeared in the Fertile Crescent. Around 10,700–9400 BC a settlement was established in Tell Qaramel , 10 miles (16 km) north of Aleppo . The settlement included two temples dating to 9650 BC. Around 9000 BC during

Vault (architecture) - Misplaced Pages Continue

8778-600: The Caucasus , the Levant , and parts of Central Asia and South Asia . One of the high points in Iranian civilization, the Sasanian dynasty's rule was characterized by a complex and centralized government bureaucracy, and also revitalized Zoroastrianism as a legitimizing and unifying ideal. This period saw the construction of many grand monuments, public works, and patronized cultural and educational institutions. The Sasanian Empire's cultural influence extended far beyond

8987-634: The Epipalaeolithic Near East and Mesopotamia , and later in other parts of the world. It lasted in the Near East until the transitional period of the Chalcolithic (Copper Age) from about 6,500 years ago (4500 BC), marked by the development of metallurgy , leading up to the Bronze Age and Iron Age . In other places, the Neolithic followed the Mesolithic (Middle Stone Age) and then lasted until later. In Ancient Egypt ,

9196-595: The Iranians ' ), was the last pre-Islamic Iranian empire . Named after the House of Sasan , it endured for over four centuries, from 224 to 651, making it the second longest-lived Persian imperial dynasty after the directly preceding Arsacid dynasty of Parthia . It fell to the Rashidun Caliphate during the early Muslim conquests , which marked the beginning of a monumental societal shift by initiating

9405-648: The Islamization of Iran . Upon succeeding the Parthians, the Sasanian dynasty re-established the Persian nation as a major power in late antiquity , and also continued to compete extensively with the neighbouring Roman Empire . It was founded by Ardashir I , a ruler who rose to power as Parthia weakened amidst internal strife and the Roman–Persian Wars . After defeating Artabanus IV of Parthia during

9614-631: The Jordan Valley ; Israel (notably Ain Mallaha , Nahal Oren , and Kfar HaHoresh ); and in Byblos , Lebanon . The start of Neolithic 1 overlaps the Tahunian and Heavy Neolithic periods to some degree. The major advance of Neolithic 1 was true farming. In the proto-Neolithic Natufian cultures, wild cereals were harvested, and perhaps early seed selection and re-seeding occurred. The grain

9823-559: The Longshan culture existed in the middle and lower Yellow River valley areas of northern China. Towards the end of the 3rd millennium BC, the population decreased sharply in most of the region and many of the larger centres were abandoned, possibly due to environmental change linked to the end of the Holocene Climatic Optimum . The 'Neolithic' (defined in this paragraph as using polished stone implements) remains

10032-706: The Mamikonian family, touching off a revolt which led to the massacre of the Persian governor and his guard in 571, while rebellion also broke out in Iberia . Justin II took advantage of the Armenian revolt to stop his yearly payments to Khosrow I for the defense of the Caucasus passes. The Armenians were welcomed as allies, and an army was sent into Sassanid territory which besieged Nisibis in 573. However, dissension among

10241-463: The Middle East , cultures identified as Neolithic began appearing in the 10th millennium BC. Early development occurred in the Levant (e.g. Pre-Pottery Neolithic A and Pre-Pottery Neolithic B ) and from there spread eastwards and westwards. Neolithic cultures are also attested in southeastern Anatolia and northern Mesopotamia by around 8000 BC. Anatolian Neolithic farmers derived

10450-545: The Neolithic Revolution , a wide-ranging set of developments that appear to have arisen independently in several parts of the world. This "Neolithic package" included the introduction of farming , domestication of animals , and change from a hunter-gatherer lifestyle to one of settlement . The term 'Neolithic' was coined by Sir John Lubbock in 1865 as a refinement of the three-age system . The Neolithic began about 12,000 years ago, when farming appeared in

10659-655: The Red Sea shoreline and moved east from Syria into southern Iraq . The Late Neolithic began around 6,400 BC in the Fertile Crescent . By then distinctive cultures emerged, with pottery like the Halafian (Turkey, Syria, Northern Mesopotamia) and Ubaid (Southern Mesopotamia). This period has been further divided into PNA (Pottery Neolithic A) and PNB (Pottery Neolithic B) at some sites. The Chalcolithic (Stone-Bronze) period began about 4500 BC, then

SECTION 50

#1732801190628

10868-412: The Rift Valley of East Africa and surrounding areas during a time period known as the Pastoral Neolithic . They were South Cushitic speaking pastoralists, who tended to bury their dead in cairns whilst their toolkit was characterized by stone bowls, pestles, grindstones and earthenware pots. Through archaeology, historical linguistics and archaeogenetics, they conventionally have been identified with

11077-433: The Santa Maria del Fiore in Florence , built by Filippo Brunelleschi , and Ferguson cites as an example the great dome of the church at Mousta in Malta , erected in the first half of the 19th century, which was built entirely without centering of any kind. It is important to note that whereas Roman vaults, like that of the Pantheon , and Byzantine vaults, like that at Hagia Sophia , were not protected from above (i.e.

11286-498: The Shabuhragan , to him) and sent many Manichaean missionaries abroad. He also befriended a Babylonian rabbi called Samuel . This friendship was advantageous for the Jewish community and gave them a respite from the oppressive laws enacted against them. Later kings reversed Shapur's policy of religious tolerance. When Shapur's son Bahram I acceded to the throne, he was pressured by the Zoroastrian high-priest Kartir Bahram I to kill Mani and persecute his followers. Bahram II

11495-404: The Sumerians , possibly under the ziggurat at Nippur in Babylonia , which was built of fired bricks cemented with clay mortar . The earliest barrel vaults in ancient Egypt are thought to be those in the granaries built by the 19th dynasty Pharaoh Ramesses II , the ruins of which are behind the Ramesseum , at Thebes . The span was 12 feet (3.7 m) and the lower part of the arch

11704-402: The Tigris , taking Ctesiphon. Narseh had previously sent an ambassador to Galerius to plead for the return of his wives and children. Peace negotiations began in the spring of 299, with both Diocletian and Galerius presiding. The conditions of the peace were heavy: Persia would give up territory to Rome, making the Tigris the boundary between the two empires. Further terms specified that Armenia

11913-404: The groins are covered by ribs or diagonal ribs in the form of segmental arches. Their curvatures are defined by the bounding arches. Whilst the transverse arches retain the same semi-circular profile as their groin-vaulted counterparts, the longitudinal arches are pointed with both arcs having their centres on the impost line . This allows the latter to correspond more closely to the curvatures of

12122-425: The king says "I am the lord of the Empire of the Iranians". More commonly, as the ruling dynasty was named after Sasan , the empire is known as the Sasanian Empire in historical and academic sources. This term is also recorded in English as the Sassanian Empire , the Sasanid Empire , and the Sassanid Empire . Conflicting accounts shroud the details of the fall of the Parthian Empire and subsequent rise of

12331-443: The tepidaria of the Thermae and in the basilica of Constantine , in order to bring the thrust well within the walls, the main barrel vault of the hall was brought forward on each side and rested on detached columns, which constituted the principal architectural decoration. In cases where the cross vaults intersecting were not of the same span as those of the main vault, the arches were either stilted so that their soffits might be of

12540-409: The 400-year-old Parthian Empire to an end, and beginning four centuries of Sassanid rule. In the next few years, local rebellions occurred throughout the empire. Nonetheless, Ardashir I further expanded his new empire to the east and northwest, conquering the provinces of Sakastan , Gorgan , Khorasan , Marw (in modern Turkmenistan ), Balkh and Chorasmia . He also added Bahrain and Mosul to

12749-411: The Alchon Tamgha and the name "Alchono" in Bactrian script on the obverse, and with attendants to a fire altar on the reverse. Shapur II pursued a harsh religious policy. Under his reign, the collection of the Avesta , the sacred texts of Zoroastrianism, was completed, heresy and apostasy were punished, and Christians were persecuted. The latter was a reaction against the Christianization of

SECTION 60

#1732801190628

12958-436: The Arabs. Bahram gained the crown after Yazdegerd's sudden death (or assassination), which occurred when the grandees opposed the king with the help of al-Mundhir , the Arabic dynast of al-Hirah . Bahram's mother was Shushandukht , the daughter of the Jewish Exilarch . In 427, he crushed an invasion in the east by the nomadic Hephthalites , extending his influence into Central Asia, where his portrait survived for centuries on

13167-503: The Balkans from 6000 BC, and in Central Europe by around 5800 BC ( La Hoguette ). Among the earliest cultural complexes of this area are the Sesklo culture in Thessaly, which later expanded in the Balkans giving rise to Starčevo-Körös (Cris), Linearbandkeramik , and Vinča . Through a combination of cultural diffusion and migration of peoples , the Neolithic traditions spread west and northwards to reach northwestern Europe by around 4500 BC. The Vinča culture may have created

13376-402: The Bronze Age, eventually giving rise to permanently settled farming towns , and later cities and states whose larger populations could be sustained by the increased productivity from cultivated lands. The profound differences in human interactions and subsistence methods associated with the onset of early agricultural practices in the Neolithic have been called the Neolithic Revolution ,

13585-419: The Byzantine Empire and met little effective resistance. Khosrow's generals systematically subdued the heavily fortified frontier cities of Byzantine Mesopotamia and Armenia, laying the foundations for unprecedented expansion. The Persians overran Syria and captured Antioch in 611. In 613, outside Antioch, the Persian generals Shahrbaraz and Shahin decisively defeated a major counter-attack led in person by

13794-422: The Byzantine Empire held a small portion of western Armenia. Bahram IV's son Yazdegerd I (399–421) is often compared to Constantine I . Both were physically and diplomatically powerful, opportunistic, practiced religious tolerance and provided freedom for the rise of religious minorities. Yazdegerd stopped the persecution against the Christians and punished nobles and priests who persecuted them. His reign marked

14003-474: The Byzantine emperor Heraclius . Thereafter, the Persian advance continued unchecked. Jerusalem fell in 614, Alexandria in 619, and the rest of Egypt by 621. The Sassanid dream of restoring the Achaemenid boundaries was almost complete, while the Byzantine Empire was on the verge of collapse. This remarkable peak of expansion was paralleled by a blossoming of Persian art , music , and architecture . While successful at its first stage (from 602 to 622),

14212-525: The Byzantine generals not only led to an abandonment of the siege, but they in turn were besieged in the city of Dara , which was taken by the Persians. Capitalizing on this success, the Persians then ravaged Syria, causing Justin II to agree to make annual payments in exchange for a five-year truce on the Mesopotamian front, although the war continued elsewhere. In 576 Khosrow I led his last campaign, an offensive into Anatolia which sacked Sebasteia and Melitene , but ended in disaster: defeated outside Melitene,

14421-457: The Christians. However, he proved unpopular among the nobility and clergy who had him deposed after just four years in 488. Sukhra, who had played a key role in Balash's deposition, appointed Peroz's son Kavad I as the new shah of Iran. According to Miskawayh (d. 1030), Sukhra was Kavad's maternal uncle. Kavad I (488–531) was an energetic and reformist ruler. He gave his support to the sect founded by Mazdak , son of Bamdad, who demanded that

14630-429: The Eastern Romans, founded several cities, some of which were named after him, and began to regulate taxation and internal administration. After the reign of Kavad I, his son Khosrow I , also known as Anushirvan ("with the immortal soul"; ruled 531–579), ascended to the throne. He is the most celebrated of the Sassanid rulers. Khosrow I is most famous for his reforms in the aging governing body of Sassanids. He introduced

14839-410: The Euphrates in 296, he was eventually decisively defeated by them. Galerius had been reinforced, probably in the spring of 298, by a new contingent collected from the empire's Danubian holdings. Narseh did not advance from Armenia and Mesopotamia , leaving Galerius to lead the offensive in 298 with an attack on northern Mesopotamia via Armenia. Narseh retreated to Armenia to fight Galerius's force, to

15048-437: The Hephthalites. Smbat, with the aid of a Persian prince named Datoyean, repelled the Hephthalites from Persia, and plundered their domains in eastern Khorasan , where Smbat is said to have killed their king in single combat. After Maurice was overthrown and killed by Phocas (602–610) in 602, however, Khosrow II used the murder of his benefactor as a pretext to begin a new invasion, which benefited from continuing civil war in

15257-616: The Kushan Empire, while leading several campaigns against Rome. Invading Roman Mesopotamia , Shapur I captured Carrhae and Nisibis , but in 243 the Roman general Timesitheus defeated the Persians at Rhesaina and regained the lost territories. The emperor Gordian III 's (238–244) subsequent advance down the Euphrates was defeated at Meshike (244), leading to Gordian's murder by his own troops and enabling Shapur to conclude

15466-496: The Maltese archipelago) and of Mnajdra (Malta) are notable for their gigantic Neolithic structures, the oldest of which date back to around 3600 BC. The Hypogeum of Ħal-Saflieni , Paola , Malta, is a subterranean structure excavated around 2500 BC; originally a sanctuary, it became a necropolis , the only prehistoric underground temple in the world, and shows a degree of artistry in stone sculpture unique in prehistory to

15675-443: The Maltese islands. After 2500 BC, these islands were depopulated for several decades until the arrival of a new influx of Bronze Age immigrants, a culture that cremated its dead and introduced smaller megalithic structures called dolmens to Malta. In most cases there are small chambers here, with the cover made of a large slab placed on upright stones. They are claimed to belong to a population different from that which built

15884-651: The Middle East. The neolithization of Northwestern Africa was initiated by Iberian , Levantine (and perhaps Sicilian ) migrants around 5500-5300 BC. During the Early Neolithic period, farming was introduced by Europeans and was subsequently adopted by the locals. During the Middle Neolithic period, an influx of ancestry from the Levant appeared in Northwestern Africa, coinciding with

16093-542: The Neolithic appeared everywhere in the same order: the earliest farming societies in the Near East did not use pottery. In other parts of the world, such as Africa , South Asia and Southeast Asia , independent domestication events led to their own regionally distinctive Neolithic cultures, which arose completely independently of those in Europe and Southwest Asia . Early Japanese societies and other East Asian cultures used pottery before developing agriculture. In

16302-708: The Neolithic lasted until the Protodynastic period , c. 3150 BC. In China , it lasted until circa 2000 BC with the rise of the pre-Shang Erlitou culture , as it did in Scandinavia . Following the ASPRO chronology , the Neolithic started in around 10,200 BC in the Levant , arising from the Natufian culture , when pioneering use of wild cereals evolved into early farming . The Natufian period or "proto-Neolithic" lasted from 12,500 to 9,500 BC, and

16511-475: The Neolithic than in the preceding Paleolithic period. This supplanted an earlier view of the Linear Pottery Culture as living a "peaceful, unfortified lifestyle". Control of labour and inter-group conflict is characteristic of tribal groups with social rank that are headed by a charismatic individual – either a ' big man ' or a proto- chief – functioning as a lineage-group head. Whether

16720-498: The Nimrud sculptures, the chief difference being that, constructed in rubble stone and cemented with mortar, they still exist, though probably abandoned on the Islamic invasion in the 7th century. A groin vault is formed by the intersection of two or more barrel vaults, resulting in the formation of angles or groins along the lines of transition between the webs. In these bays the longer transverse arches are semi-circular, as are

16929-781: The PPNA, one of the world's first towns, Jericho , appeared in the Levant. It was surrounded by a stone wall, may have contained a population of up to 2,000–3,000 people, and contained a massive stone tower. Around 6400 BC the Halaf culture appeared in Syria and Northern Mesopotamia. In 1981, a team of researchers from the Maison de l'Orient et de la Méditerranée , including Jacques Cauvin and Oliver Aurenche, divided Near East Neolithic chronology into ten periods (0 to 9) based on social, economic and cultural characteristics. In 2002, Danielle Stordeur and Frédéric Abbès advanced this system with

17138-630: The Pantheon and the Basilica of Maxentius. Brick vaults have been used in Egypt since the early 3rd millennium BC. widely used and from the end of the 8th century B.C. Keystone vaults were built. However, monumental temple buildings of the pharaonic culture in the Nile Valley did not use vaults, since even the huge portals with widths of more than 7 meters were spanned with cut stone beams. Amongst

17347-676: The Persians suffered heavy losses as they fled across the Euphrates under Byzantine attack. Taking advantage of Persian disarray, the Byzantines raided deep into Khosrow's territory, even mounting amphibious attacks across the Caspian Sea . Khosrow sued for peace, but he decided to continue the war after a victory by his general Tamkhosrow in Armenia in 577, and fighting resumed in Mesopotamia. The Armenian revolt came to an end with

17556-599: The Roman Empire by Constantine the Great . Shapur II, like Shapur I, was amicable towards Jews , who lived in relative freedom and gained many advantages during his reign. At the time of his death, the Persian Empire was stronger than ever, with its enemies to the east pacified and Armenia under Persian control. From Shapur II's death until Kavad I 's first coronation, there was a largely peaceful period with

17765-422: The Roman brick (measuring nearly 2 feet (0.61 m) square and 2 in. thick); on these and on the trusses transverse rings of brick were built with longitudinal ties at intervals; on the brick layers and embedding the rings and cross ties concrete was thrown in horizontal layers, the haunches being filled in solid, and the surface sloped on either side and covered over with a tile roof of low pitch laid direct on

17974-542: The Roman reservoir at Baiae , known as the Piscina Mirabilis , a series of five aisles with semicircular barrel vaults are intersected by twelve cross aisles, the vaults being carried on 48 piers and thick external walls. The width of these aisles being only about 13 feet (4.0 m) there was no great difficulty in the construction of these vaults, but in the Roman Baths of Caracalla the tepidarium had

18183-524: The Romans (by this time the Eastern Roman or Byzantine Empire ) engaged in just two brief wars with the Sasanian Empire, the first in 421–422 and the second in 440 . Throughout this era, Sasanian religious policy differed dramatically from king to king. Despite a series of weak leaders, the administrative system established during Shapur II's reign remained strong, and the empire continued to function effectively. After Shapur II died in 379,

18392-646: The Romans already replaced by small cupolas or domes. These domes, however, are of small dimensions when compared with that projected and carried out by Justinian in the Hagia Sophia . Previous to this the greatest dome was that of the Pantheon at Rome, but this was carried on an immense wall 20 feet (6.1 m) thick, and with the exception of small niches or recesses in the thickness of the wall could not be extended, so that Justinian apparently instructed his architect to provide an immense hemicycle or apse at

18601-421: The Romans in the west, where Persian forces won a series of battles but were unable to make territorial gains due to the failure of repeated sieges of the key frontier city of Nisibis, and Roman success in retaking the cities of Singara and Amida after they had previously fallen to the Persians. These campaigns were halted by nomadic raids along the eastern borders of the empire, which threatened Transoxiana ,

18810-474: The Romans; an attempt by the Iberians in 524/525 to do likewise triggered a war between Rome and Persia. In 527, a Roman offensive against Nisibis was repulsed and Roman efforts to fortify positions near the frontier were thwarted. In 530, Kavad sent an army under Perozes to attack the important Roman frontier city of Dara . The army was met by the Roman general Belisarius , and, though superior in numbers,

19019-669: The Sassanian Empire in mystery. The Sassanian Empire was established in Estakhr by Ardashir I . Ardashir's father, Papak , was originally the ruler of a region called Khir. However, by 200, Papak had managed to overthrow Gochihr and appoint himself the new ruler of the Bazrangids . Papak's mother, Rodhagh, was the daughter of the provincial governor of Pars . Papak and his eldest son Shapur managed to expand their power over all of Pars. Subsequent events are unclear due to

19228-410: The Sassanid possessions. Later Sassanid inscriptions also claim the submission of the kings of Kushan , Turan and Makuran to Ardashir, although based on numismatic evidence it is more likely that these actually submitted to Ardashir's son, the future Shapur I . In the west, assaults against Hatra , Armenia and Adiabene met with less success. In 230, Ardashir raided deep into Roman territory, and

19437-538: The Sassanids were able to establish a base in South Arabia to control the sea trade with the east. Later, the south Arabian kingdom renounced Sassanid overlordship, and another Persian expedition was sent in 598 that successfully annexed southern Arabia as a Sassanid province, which lasted until the time of troubles after Khosrow II. Khosrow I's reign witnessed the rise of the dihqans (literally, village lords),

19646-507: The Tigris, and agreed not to interfere in the affairs of Armenia and Georgia. In the aftermath of this defeat, Narseh gave up the throne and died a year later, leaving the Sassanid throne to his son, Hormizd II . Unrest spread throughout the land, and while the new king suppressed revolts in Sakastan and Kushan, he was unable to control the nobles and was subsequently killed by Bedouins on

19855-978: The Tigris, had to hand over all the provinces the Persians had ceded to Rome in 298, as well as Nisibis and Singara, to secure safe passage for his army out of Persia. From around 370, however, towards the end of the reign of Shapur II , the Sasanians lost the control of Bactria to invaders from the north: first the Kidarites , then the Hephthalites and finally the Alchon Huns , who would follow up with an invasion of India . These invaders initially issued coins based on Sasanian designs. Various coins minted in Bactria and based on Sasanian designs are extant, often with busts imitating Sassanian kings Shapur II (r. 309 to 379) and Shapur III (r. 383 to 388), adding

20064-414: The aisles, and the other two partly by smaller arches in the apse, the thrust being carried to the outer walls, and to a certain extent by the side walls which were built under the arches. From the description given by Procopius we gather that the centering employed for the great arches consisted of a wall erected to support them during their erection. The construction of the pendentives is not known, but it

20273-550: The aisles, which had only half the span of the nave ; of this there is an interesting example in the Chapel of Saint John in the Tower of London – and sometimes by half-barrel vaults. The great thickness of the walls, however, required in such constructions would seem to have led to another solution of the problem of roofing over churches with incombustible material, viz. that which is found throughout Périgord and La Charente , where

20482-444: The alliance, Khosrow also married Maurice's daughter Miriam. Under the command of Khosrow and the Byzantine generals Narses and John Mystacon , the new combined Byzantine-Persian army raised a rebellion against Bahram, defeating him at the Battle of Blarathon in 591. When Khosrow was subsequently restored to power he kept his promise, handing over control of western Armenia and Caucasian Iberia . The new peace arrangement allowed

20691-634: The angles, as in the Mosque of Damascus , which was built by Byzantine workmen for the Al-Walid I in CE 705; these gave an octagonal base on which the hemispherical dome rested; or again, as in the Sassanian palaces of Sarvestan and Firouzabad of the 4th and 5th century, when a series of concentric arch rings, projecting one in front of the other, were built, giving also an octagonal base; each of these pendentives

20900-531: The apparent implied egalitarianism of Neolithic (and Paleolithic) societies have arisen, notably the Marxist concept of primitive communism . Genetic evidence indicates that a drop in Y-chromosomal diversity occurred during the Neolithic. Initially believed to be a result of high incidence of violence and high rates of male mortality, more recent analysis suggests that the reduced Y-chromosomal diversity

21109-684: The area". The research team will perform accelerator mass spectrometry (AMS) dating to retrieve a more precise date for the site. In Mesoamerica , a similar set of events (i.e., crop domestication and sedentary lifestyles) occurred by around 4500 BC in South America, but possibly as early as 11,000–10,000 BC. These cultures are usually not referred to as belonging to the Neolithic; in North America, different terms are used such as Formative stage instead of mid-late Neolithic, Archaic Era instead of Early Neolithic, and Paleo-Indian for

21318-554: The area's first Afroasiatic -speaking settlers. Archaeological dating of livestock bones and burial cairns has also established the cultural complex as the earliest center of pastoralism and stone construction in the region. In southeast Europe agrarian societies first appeared in the 7th millennium BC , attested by one of the earliest farming sites of Europe, discovered in Vashtëmi , southeastern Albania and dating back to 6500 BC. In most of Western Europe in followed over

21527-421: The army and bureaucracy more closely to the central government than to local lords. Emperor Justinian I (527–565) paid Khosrow I 440,000 pieces of gold as a part of the "eternal peace" treaty of 532. In 540, Khosrow broke the treaty and invaded Syria, sacking Antioch and extorting large sums of money from a number of other cities. Further successes followed: in 541 Lazica defected to the Persian side, and in 542

21736-608: The arrival of pastoralism in the region. The earliest evidence for pottery, domestic cereals and animal husbandry is found in Morocco, specifically at Kaf el-Ghar . The Pastoral Neolithic was a period in Africa's prehistory marking the beginning of food production on the continent following the Later Stone Age . In contrast to the Neolithic in other parts of the world, which saw the development of farming societies,

21945-470: The bays into square compartments. In the 12th century the first attempts were made to vault over the naves, which were twice the width of the aisles, so it became necessary to include two bays of the aisles to form one rectangular bay in the nave (although this is often mistaken as square). It followed that every alternate pier served no purpose, so far as the support of the nave vault was concerned, and this would seem to have suggested an alternative to provide

22154-423: The bow and arrow and ceramic pottery were also introduced. In later periods cities of considerable size developed, and some metallurgy by 700 BC. Australia, in contrast to New Guinea , has generally been held not to have had a Neolithic period, with a hunter-gatherer lifestyle continuing until the arrival of Europeans. This view can be challenged in terms of the definition of agriculture, but "Neolithic" remains

22363-436: The campaign of Khosrau II had actually exhausted the Persian army and treasuries. In an effort to rebuild the national treasuries, Khosrau overtaxed the population. Thus, while his empire was on the verge of total defeat, Heraclius (610–641) drew on all his diminished and devastated empire's remaining resources, reorganised his armies, and mounted a remarkable, risky counter-offensive. Between 622 and 627, he campaigned against

22572-558: The capture of his harem and the loss of all the Roman territories he had occupied. Shapur had intensive development plans. He ordered the construction of the first dam bridge in Iran and founded many cities, some settled in part by emigrants from the Roman territories, including Christians who could exercise their faith freely under Sassanid rule. Two cities, Bishapur and Nishapur , are named after him. He particularly favoured Manichaeism , protecting Mani (who dedicated one of his books,

22781-459: The cathedral of Soissons (1205) a quadripartite or four-celled vault was introduced, the width of each bay being half the span of the nave, and corresponding therefore with the aisle piers. To this there are some exceptions, in Sant' Ambrogio, Milan, and San Michele, Pavia (the original vault), and in the cathedrals of Speyer , Mainz and Worms , where the quadripartite vaults are nearly square,

22990-478: The central dome of the Jumma Musjid at Bijapur (A.D. 1559), and the other is Gol Gumbaz , the tomb of Muhammad Adil Shah II (1626–1660) in the same town. The vault of the latter was constructed over a hall 135 feet (41 m) square, to carry a hemispherical dome. The ribs, instead of being carried across the angles only, thus giving an octagonal base for the dome, are carried across to the further pier of

23199-410: The choir aisles of the abbey of Saint-Denis, near Paris , built by the abbot Suger in 1135. It was in the church at Vezelay (1140) that it was extended to the square bay of the porch . As has been pointed out, the aisles had already in the early Christian churches been covered over with groined vaults, the only advance made in the later developments being the introduction of transverse ribs' dividing

23408-630: The coinage of Bukhara (in modern Uzbekistan ). Bahram deposed the vassal king of the Iranian-held area of Armenia and made it a province of the empire. Bahram V's son Yazdegerd II (438–457) was in some ways a moderate ruler, but, in contrast to Yazdegerd I, he practised a harsh policy towards minority religions, particularly Christianity . However, at the Battle of Avarayr in 451, the Armenian subjects led by Vardan Mamikonian reaffirmed Armenia's right to profess Christianity freely. This

23617-421: The concrete had set, not only made the concrete as solid as the rock itself, but to a certain extent neutralized the thrust of the vaults, which formed shells equivalent to that of a metal lid; the Romans, however, do not seem to have recognized the value of this pozzolana mixture, for they otherwise provided amply for the counteracting of any thrust which might exist by the erection of cross walls and buttresses. In

23826-402: The concrete. The rings relieved the centering from the weight imposed, and the two layers of bricks carried the concrete till it had set. As the walls carrying these vaults were also built in concrete with occasional bond courses of brick, the whole structure was homogeneous. One of the important ingredients of the mortar was a volcanic deposit found near Rome, known as pozzolana , which, when

24035-406: The construction of vaults reverted to the geometrical surfaces of the Romans, without, however, always that economy in centering to which they had attached so much importance, and more especially in small structures. In large vaults, where it constituted an important expense, the chief boast of some of the most eminent architects has been that centering was dispensed with, as in the case of the dome of

24244-438: The courses dipped towards the former, and at the apex of the vault were cut to fit one another. In the early English Gothic period, in consequence of the great span of the vault and the very slight rise or curvature of the web, it was thought better to simplify the construction of the web by introducing intermediate ribs between the wall rib and the diagonal rib and between the diagonal and the transverse ribs; and in order to meet

24453-504: The dead, which were plastered with mud to make facial features. The rest of the corpse could have been left outside the settlement to decay until only the bones were left, then the bones were buried inside the settlement underneath the floor or between houses. Work at the site of 'Ain Ghazal in Jordan has indicated a later Pre-Pottery Neolithic C period. Juris Zarins has proposed that

24662-607: The diagonal ribs, producing a straight tunnel running from east to west. Reference has been made to the rib vault in Roman work, where the intersecting barrel vaults were not of the same diameter. Their construction must at all times have been somewhat difficult, but where the barrel vaulting was carried round over the choir aisle and was intersected (as in St Bartholomew-the-Great in Smithfield, London ) by semicones instead of cylinders, it became worse and

24871-401: The difficulty, however, of working the ribs separately led to two other important changes: (1) the lower part of the transverse diagonal and wall ribs were all worked out of one stone; and (2) the lower horizontal, constituting what is known as the tas-de-charge or solid springer . The tas-de-charge, or solid springer, had two advantages: (1) it enabled the stone courses to run straight through

25080-608: The earliest farmland known to date in east Asia. "No remains of an agricultural field from the Neolithic period have been found in any East Asian country before, the institute said, adding that the discovery reveals that the history of agricultural cultivation at least began during the period on the Korean Peninsula ". The farm was dated between 3600 and 3000 BC. Pottery, stone projectile points, and possible houses were also found. "In 2002, researchers discovered prehistoric earthenware , jade earrings, among other items in

25289-574: The earliest known examples of any form of vaulting is to be found in the neolithic village of Khirokitia on Cyprus . Dating from c.  6000 BCE , the circular buildings supported beehive shaped corbel domed vaults of unfired mud-bricks and also represent the first evidence for settlements with an upper floor. Similar beehive tombs , called tholoi , exist in Crete and Northern Iraq . Their construction differs from that at Khirokitia in that most appear partially buried and make provision for

25498-573: The earliest system of writing, the Vinča signs , though archaeologist Shan Winn believes they most likely represented pictograms and ideograms rather than a truly developed form of writing. The Cucuteni-Trypillian culture built enormous settlements in Romania, Moldova and Ukraine from 5300 to 2300 BC. The megalithic temple complexes of Ġgantija on the Mediterranean island of Gozo (in

25707-404: The eastern end, a similar apse at the western end, and great arches on either side, the walls under which would be pierced with windows. Unlike the Pantheon dome, the upper portions of which are made of concrete, Byzantine domes were made of brick, which were lighter and thinner, but more vulnerable to the forces exerted onto them. The diagram shows the outlines of the solution of the problem. If

25916-404: The elusive nature of the sources. It is certain that following the death of Papak, Ardashir, the governor of Darabgerd , became involved in a power struggle with his elder brother Shapur. Sources reveal that Shapur was killed when the roof of a building collapsed on him. By 208, over the protests of his other brothers, who were put to death, Ardashir declared himself ruler of Pars. Once Ardashir

26125-421: The empire passed on to his half-brother Ardashir II (379–383; son of Hormizd II) and his son Shapur III (383–388), neither of whom demonstrated their predecessor's skill in ruling. Bahram IV (388–399) also failed to achieve anything important for the empire. During this time Armenia was divided by a treaty between the Roman and Sasanian empires. The Sasanians reestablished their rule over Greater Armenia, while

26334-417: The employment of centerings of one curve for all the ribs, instead of having separate centerings for the transverse, diagonal wall and intermediate ribs; it was facilitated also by the introduction of the four-centred arch, because the lower portion of the arch formed part of the fan, or conoid, and the upper part could be extended at pleasure with a greater radius across the vault. These ribs were often cut from

26543-446: The enclosures also suggest grain and meat storage. The Neolithic 2 (PPNB) began around 8800 BC according to the ASPRO chronology in the Levant ( Jericho , West Bank). As with the PPNA dates, there are two versions from the same laboratories noted above. This system of terminology, however, is not convenient for southeast Anatolia and settlements of the middle Anatolia basin. A settlement of 3,000 inhabitants called 'Ain Ghazal

26752-575: The first cultivated crop and mark the invention of the technology of farming. This occurred centuries before the first cultivation of grains. Settlements became more permanent, with circular houses, much like those of the Natufians, with single rooms. However, these houses were for the first time made of mudbrick . The settlement had a surrounding stone wall and perhaps a stone tower (as in Jericho). The wall served as protection from nearby groups, as protection from floods, or to keep animals penned. Some of

26961-557: The first form of African food production was mobile pastoralism , or ways of life centered on the herding and management of livestock. The term "Pastoral Neolithic" is used most often by archaeologists to describe early pastoralist periods in the Sahara , as well as in eastern Africa . The Savanna Pastoral Neolithic or SPN (formerly known as the Stone Bowl Culture ) is a collection of ancient societies that appeared in

27170-567: The former's disadvantage: the rugged Armenian terrain was favourable to Roman infantry, but not to Sassanid cavalry. Local aid gave Galerius the advantage of surprise over the Persian forces, and, in two successive battles, Galerius secured victories over Narseh. During the second encounter, Roman forces seized Narseh's camp, his treasury, his harem, and his wife. Galerius advanced into Media and Adiabene , winning successive victories, most prominently near Erzurum , and securing Nisibis ( Nusaybin , Turkey) before 1 October 298. He then advanced down

27379-404: The four arches rest. Having obtained a circle for the base of the dome, it is not necessary that the upper portion of the dome should spring from the same level as the arches, or that its domical surface should be a continuation of that of the pendentive. The first and second dome of the Hagia Sophia apparently fell down, so that Justinian determined to raise it, possibly to give greater lightness to

27588-493: The frontiers to act as guardians against invaders. He was tolerant of all religions, though he decreed that Zoroastrianism should be the official state religion , and was not unduly disturbed when one of his sons became a Christian. After Khosrow I, Hormizd IV (579–590) took the throne. The war with the Byzantines continued to rage intensely but inconclusively until the general Bahram Chobin , dismissed and humiliated by Hormizd, rose in revolt in 589. The following year, Hormizd

27797-460: The gathering of wild plants" and suggests that these subsistence changes were not due to farmers migrating from the Near East but was an indigenous development, with cereals either indigenous or obtained through exchange. Other scholars argue that the primary stimulus for agriculture and domesticated animals (as well as mud-brick architecture and other Neolithic cultural features) in Egypt was from

28006-596: The great advance in the science of vaulting shown in this church owed something to the eastern tradition of dome vaulting seen in the Assyrian domes, which are known to us only by the representations in the bas-relief from Nimrud, because in the great water cisterns in Istanbul, known as the Basilica Cistern and Bin bir direk (cistern with a thousand and one columns), we find the intersecting groin vaults of

28215-523: The great dimensions of the vault, it was found necessary to introduce transverse ribs, which were required to give greater strength. Similar transverse ribs are found in Henry VII 's chapel and in the Divinity School at Oxford , where a new development presented itself. One of the defects of the fan vault at Gloucester is the appearance it gives of being half sunk in the wall; to remedy this, in

28424-418: The great hall at Ctesiphon , where the material employed was fired bricks or tiles of great dimensions, cemented with mortar; but the span was close upon 83 feet (25 m), and the thickness of the vault was nearly 5 feet (1.5 m) at the top, there being four rings of brickwork . Assyrian palaces used pitched-brick vaults, made with sun-dried mudbricks, for gates, subterranean graves and drains. During

28633-399: The groins more complicated. This would seem to have led to a change of system and to the introduction of a new feature, which completely revolutionized the construction of the vault. Hitherto the intersecting features were geometrical surfaces, of which the diagonal groins were the intersections, elliptical in form, generally weak in construction and often twisting. The medieval builder reversed

28842-514: The ground and lifted to 40 m on chains. When made by plants or trees, either artificially or grown on purpose by humans, structures of this type are called tree tunnels . Neolithic The Neolithic or New Stone Age (from Greek νέος néos 'new' and λίθος líthos 'stone') is an archaeological period , the final division of the Stone Age in Europe , Asia , Mesopotamia and Africa (c. 10,000 BC to c. 2,000 BC). It saw

29051-465: The head of a large army granted to him by the Hephthalite king, returned to the empire's capital. Jamasp stepped down from his position and returned the throne to his brother. No further mention of Jamasp is made after the restoration of Kavad I, but it is widely believed that he was treated favourably at the court of his brother. The second golden era began after the second reign of Kavad I. With

29260-578: The increase in population above the carrying capacity of the land and a high sedentary local population concentration. In some cultures, there would have been a significant shift toward increased starch and plant protein. The relative nutritional benefits and drawbacks of these dietary changes and their overall impact on early societal development are still debated. Sassanid The Sasanian Empire ( / s ə ˈ s ɑː n i ə n , s ə ˈ s eɪ n i ə n / ), officially Ērānšahr ( Middle Persian : 𐭠𐭩𐭥𐭠𐭭𐭱𐭲𐭥𐭩 , lit.   ' Empire of

29469-598: The inner is structural. Baltasar Neumann , in his baroque churches, perfected light-weight plaster vaults supported by wooden frames. These vaults, which exerted no lateral pressures, were perfectly suited for elaborate ceiling frescoes. In St Paul's Cathedral in London there is a highly complex system of vaults and faux-vaults. The dome that one sees from the outside is not a vault, but a relatively light-weight wooden-framed structure resting on an invisible – and for its age highly original – catenary vault of brick, below which

29678-401: The intermediate piers of the aisles being of much smaller dimensions. In England sexpartite vaults exist at Canterbury (1175) (set out by William of Sens ), Rochester (1200), Lincoln (1215), Durham (east transept ), and St. Faith's chapel , Westminster Abbey . In the earlier stage of rib vaulting, the arched ribs consisted of independent or separate voussoirs down to the springing;

29887-411: The introduction of the pointed arch for the transverse and wall ribs – the pointed arch had long been known and employed, on account of its much greater strength and of the less thrust it exerted on the walls. When employed for the ribs of a vault, however narrow the span might be, by adopting a pointed arch, its summit could be made to range in height with the diagonal rib; and, moreover, when utilized for

30096-502: The kingdom. Peroz tried again to drive out the Hephthalites, but on the way to Balkh his army was trapped by the Huns in the desert. Peroz was defeated and killed by a Hephthalite army near Balkh. His army was completely destroyed, and his body was never found. Four of his sons and brothers had also died. The main Sasanian cities of the eastern region of Khorasan − Nishapur , Herat and Marw were now under Hephthalite rule. Sukhra ,

30305-631: The late vaulting of the entrance gateways to the colleges. Fan vaulting is peculiar to England, the only example approaching it in France being the pendant of the Lady-chapel at Caudebec-en-Caux , in Normandy. In France, Germany, and Spain the multiplication of ribs in the 15th century led to decorative vaults of various kinds, but with some singular modifications. Thus, in Germany, recognizing that

30514-576: The level of the transverse arches and of the wall ribs, and thus gave the appearance of a dome to the vault, such as may be seen in the nave of Sant'Ambrogio, Florence . To meet this, at first the transverse and wall ribs were stilted, or the upper part of their arches was raised, as in the Abbaye-aux-Hommes at Caen , and the Abbey of Lessay , in Normandy . The problem was ultimately solved by

30723-511: The main ribs, and were employed chiefly as decorative features, as, for instance, in the Liebfrauenkirche (1482) of Mühlacker , Germany. One of the best examples of Lierne ribs exists in the vault of the oriel window of Crosby Hall, London . The tendency to increase the number of ribs led to singular results in some cases, as in the choir of Gloucester Cathedral , where the ordinary diagonal ribs become mere ornamental mouldings on

30932-551: The next 1,500 years. Populations began to rise after 3500 BC, with further dips and rises occurring between 3000 and 2500 BC but varying in date between regions. Around this time is the Neolithic decline , when populations collapsed across most of Europe, possibly caused by climatic conditions, plague, or mass migration. Settled life, encompassing the transition from foraging to farming and pastoralism, began in South Asia in

31141-440: The next two thousand years, but in some parts of Northwest Europe it is much later, lasting just under 3,000 years from c. 4500 BC–1700 BC. Recent advances in archaeogenetics have confirmed that the spread of agriculture from the Middle East to Europe was strongly correlated with the migration of early farmers from Anatolia about 9,000 years ago, and was not just a cultural exchange. Anthropomorphic figurines have been found in

31350-402: The nomad King Grumbates , started his second campaign against the Romans in 359 and soon succeeded in retaking Singara and Amida. In response the Roman emperor Julian struck deep into Persian territory and defeated Shapur's forces at Ctesiphon . He failed to take the capital, however, and was killed while trying to retreat to Roman territory. His successor Jovian , trapped on the east bank of

31559-404: The occasional substitution of the pointed barrel vault, adopted not only on account of its exerting a less thrust, but because, as pointed out by Fergusson (vol. ii. p. 46), the roofing tiles were laid directly on the vault and a less amount of filling in at the top was required. The continuous thrust of the barrel vault in these cases was met either by semicircular or pointed barrel vaults on

31768-403: The octagon and consequently intersect one another, reducing the central opening to 97 feet (30 m) in diameter, and, by the weight of the masonry they carry, serving as counterpoise to the thrust of the dome, which is set back so as to leave a passage about 12 feet (3.7 m) wide round the interior. The internal diameter of the dome is 124 feet (38 m), its height 175 feet (53 m) and

31977-410: The octagon, which externally and internally give to the roof the appearance of an umbrella. Although the dome constitutes the principal characteristic of the Byzantine church, throughout Asia Minor are numerous examples in which the naves are vaulted with the semicircular barrel vault, and this is the type of vault found throughout the south of France in the 11th and 12th centuries, the only change being

32186-502: The other major crop domesticated were rice, millet, maize (corn), and potatoes. Crops were usually domesticated in a single location and ancestral wild species are still found. [1] Early Neolithic farming was limited to a narrow range of plants, both wild and domesticated, which included einkorn wheat , millet and spelt , and the keeping of dogs . By about 8000 BC, it included domesticated sheep and goats , cattle and pigs . Not all of these cultural elements characteristic of

32395-700: The period. This site was developed by nomadic hunter-gatherer tribes, as evidenced by the lack of permanent housing in the vicinity, and may be the oldest known human-made place of worship. At least seven stone circles, covering 25 acres (10 ha), contain limestone pillars carved with animals, insects, and birds. Stone tools were used by perhaps as many as hundreds of people to create the pillars, which might have supported roofs. Other early PPNA sites dating to around 9500–9000 BC have been found in Palestine , notably in Tell es-Sultan (ancient Jericho ) and Gilgal in

32604-417: The petty landholding nobility who were the backbone of later Sassanid provincial administration and the tax collection system. Khosrow I built infrastructure, embellishing his capital and founding new towns with the construction of new buildings. He rebuilt the canals and restocked the farms destroyed in the wars. He built strong fortifications at the passes and placed subject tribes in carefully chosen towns on

32813-401: The physical territory that it controlled, impacting regions as distant as Western Europe , Eastern Africa , and China and India . It also helped shape European and Asian medieval art. With the Muslim conquest of Persia , the influence of Sasanian art , architecture , music , literature , and philosophy was gradually absorbed into nascent Islamic culture , which, in turn, ensured

33022-442: The pointed arch rib took place at Cefalù Cathedral and pre-dated the abbey of Saint-Denis . Whilst the pointed rib-arch is often seen as an identifier for Gothic architecture, Cefalù is a Romanesque cathedral whose masons experimented with the possibility of Gothic rib-arches before it was widely adopted by western church architecture. Besides Cefalù Cathedral, the introduction of the pointed arch rib would seem to have taken place in

33231-411: The preceding period. The Formative stage is equivalent to the Neolithic Revolution period in Europe, Asia, and Africa. In the southwestern United States it occurred from 500 to 1200 AD when there was a dramatic increase in population and development of large villages supported by agriculture based on dryland farming of corn (maize), and later, beans, squash, and domesticated turkeys. During this period

33440-454: The predominant way of life, the sensitivity to these shortages could be particularly acute, affecting agrarian populations to an extent that otherwise may not have been routinely experienced by prior hunter-gatherer communities. Nevertheless, agrarian communities generally proved successful, and their growth and the expansion of territory under cultivation continued. Another significant change undergone by many of these newly agrarian communities

33649-417: The previous megalithic temples. It is presumed the population arrived from Sicily because of the similarity of Maltese dolmens to some small constructions found there. With some exceptions, population levels rose rapidly at the beginning of the Neolithic until they reached the carrying capacity . This was followed by a population crash of "enormous magnitude" after 5000 BC, with levels remaining low during

33858-496: The previous reliance on an essentially nomadic hunter-gatherer subsistence technique or pastoral transhumance was at first supplemented, and then increasingly replaced by, a reliance upon the foods produced from cultivated lands. These developments are also believed to have greatly encouraged the growth of settlements, since it may be supposed that the increased need to spend more time and labor in tending crop fields required more localized dwellings. This trend would continue into

34067-420: The process, and set up the diagonal ribs first, which were utilized as permanent centres, and on these he carried his vault or web, which henceforward took its shape from the ribs. Instead of the elliptical curve which was given by the intersection of two semicircular barrel vaults, or cylinders, he employed the semicircular arch for the diagonal ribs; this, however, raised the centre of the square bay vaulted above

34276-422: The region of Balochistan , Pakistan, around 7,000 BC. At the site of Mehrgarh , Balochistan, presence can be documented of the domestication of wheat and barley, rapidly followed by that of goats, sheep, and cattle. In April 2006, it was announced in the scientific journal Nature that the oldest (and first Early Neolithic ) evidence for the drilling of teeth in vivo (using bow drills and flint tips)

34485-421: The reign of king Sennacherib they were used to construct aqueducts, such as those at Jerwan . In the provincial city Dūr-Katlimmu they were used to created vaulted platforms. The tradition of their erection, however, would seem to have been handed down to their successors in Mesopotamia , viz. to the Sassanians , who in their palaces in Sarvestan and Firouzabad built domes of similar form to those shown in

34694-488: The rib was no longer a necessary constructive feature, they cut it off abruptly, leaving a stump only; in France, on the other hand, they gave still more importance to the rib, by making it of greater depth, piercing it with tracery and hanging pendants from it, and the web became a horizontal stone paving laid on the top of these decorated vertical webs. This is the characteristic of the great Renaissance work in France and Spain; but it soon gave way to Italian influence, when

34903-441: The ribs of the annular vault , as in the aisle round the apsidal termination of the choir, it was not necessary that the half ribs on the outer side should be in the same plane as those of the inner side; for when the opposite ribs met in the centre of the annular vault, the thrust was equally transmitted from one to the other, and being already a broken arch the change of its direction was not noticeable. The first introduction of

35112-424: The ribs struck from four centres have their springing 57 feet (17 m) from the floor of the hall. The Jumma Musjid dome was of smaller dimensions, on a square of 70 feet (21 m) with a diameter of 57 feet (17 m), and was carried on piers only instead of immensely thick walls as in the tomb; but any thrust which might exist was counteracted by its transmission across aisles to the outer wall. The Muqarnas

35321-404: The rich should divide their wives and their wealth with the poor. By adopting the doctrine of the Mazdakites, his intention evidently was to break the influence of the magnates and the growing aristocracy. These reforms led to his being deposed and imprisoned in the Castle of Oblivion in Khuzestan , and his younger brother Jamasp (Zamaspes) became king in 496. Kavad, however, quickly escaped and

35530-551: The rise of metallurgy, and most Neolithic societies on the whole were relatively simple and egalitarian. Beyond Eurasia, however, states were formed during the local Neolithic in three areas, namely in the Preceramic Andes with the Caral-Supe Civilization , Formative Mesoamerica and Ancient Hawaiʻi . However, most Neolithic societies were noticeably more hierarchical than the Upper Paleolithic cultures that preceded them and hunter-gatherer cultures in general. The domestication of large animals (c. 8000 BC) resulted in

35739-484: The roof, with ladders positioned both on the inside and outside of the houses. Stilt-house settlements were common in the Alpine and Pianura Padana ( Terramare ) region. Remains have been found in the Ljubljana Marsh in Slovenia and at the Mondsee and Attersee lakes in Upper Austria , for example. A significant and far-reaching shift in human subsistence and lifestyle was to be brought about in areas where crop farming and cultivation were first developed:

35948-421: The same height, or they formed smaller intersections in the lower part of the vault; in both of these cases, however, the intersections or groins were twisted, for which it was very difficult to form a centering, and, moreover, they were of disagreeable effect: though every attempt was made to mask this in the decoration of the vault by panels and reliefs modelled in stucco . A rib vault is one in which all of

36157-424: The same stones as the webs, with the entire vault being treated as a single jointed surface covered in interlocking tracery. The earliest example is perhaps the east walk of the cloister at Gloucester , with its surface consisting of intricately decorated panels of stonework forming conical structures that rise from the springers of the vault. In later examples, as in King's College Chapel , Cambridge, on account of

36366-410: The shorter longitudinal arches. The curvatures of these bounding arches were apparently used as the basis for the web centrings , which was created in the form of two intersecting tunnels as though each web was an arch projected horizontally in three dimensions. The earliest example is thought to be over a small hall at Pergamum , in Asia Minor , but its first employment over halls of great dimensions

36575-448: The south with little or no interference from the Parthians. Ardashir was aided by the geography of the province of Fars, which was separated from the rest of Iran. Crowned in 224 at Ctesiphon as the sole ruler of Persia, Ardashir took the title shahanshah , or "King of Kings" (the inscriptions mention Adhur-Anahid as his Banbishnan banbishn , "Queen of Queens", but her relationship with Ardashir has not been fully established), bringing

36784-401: The spread of Iranian culture, knowledge, and ideas throughout the expanding Muslim world . Officially, the empire was known as the Empire of the Iranians ( Middle Persian : 𐭠𐭩𐭥𐭠𐭭𐭱𐭲𐭥𐭩 , ērānšahr , Parthian : 𐭀𐭓𐭉𐭀𐭍𐭇𐭔𐭕𐭓 , aryānšahr , Greek : Ἀριανῶν ἔθνος , Arianōn ethnos ), the term is first attested in the trilingual Great Inscription of Shapur I , where

36993-437: The structure, but mainly in order to obtain increased light for the interior of the church. This was effected by piercing it with forty windows – the effect of which, as the light streaming through these windows, gave the dome the appearance of being suspended in the air. The pendentive which carried the dome rested on four great arches, the thrust of those crossing the church being counteracted by immense buttresses which traversed

37202-431: The support of the Hephthalites , Kavad launched a campaign against the Romans. In 502, he took Theodosiopolis in Armenia, but lost it soon afterwards. In 503 he took Amida on the Tigris. In 504, an invasion of Armenia by the western Huns from the Caucasus led to an armistice, the return of Amida to Roman control and a peace treaty in 506. In 521/522 Kavad lost control of Lazica , whose rulers switched their allegiance to

37411-399: The surface of an intersected pointed barrel vault, and again in the cloisters, where the introduction of the fan vault , forming a concave-sided conoid , returned to the principles of the Roman geometrical vault. This is further shown in the construction of these fan vaults, for although in the earliest examples each of the ribs above the tas-de-charge was an independent feature, eventually it

37620-404: The thrust of these intermediate ribs a ridge rib was required, and the prolongation of this rib to the wall rib hid the junction of the web at the summit, which was not always very sightly, and constituted the ridge rib. In France, on the other hand, the web courses were always laid horizontally, and they are therefore of unequal height, increasing towards the diagonal rib. Each course also was given

37829-501: The traditional image of a roof took precedence over the vault. The separation between interior and exterior – and between structure and image – was to be developed very purposefully in the Renaissance and beyond, especially once the dome became reinstated in the Western tradition as a key element in church design. Michelangelo 's dome for St. Peter's Basilica in Rome, as redesigned between 1585 and 1590 by Giacomo della Porta , for example, consists of two domes of which, however, only

38038-401: The two buildings just quoted, the complete conoid is detached and treated as a pendant . The vault of the Basilica of Maxentius , completed by Constantine, was the last great work carried out in Rome before its fall, and two centuries pass before the next important development is found in the Church of the Holy Wisdom (Hagia Sophia) at Constantinople . It is probable that the realization of

38247-469: The two empires to focus on military matters elsewhere: Khosrow focused on the Sassanid Empire's eastern frontier while Maurice restored Byzantine control of the Balkans . Circa 600, the Hephthalites had been raiding the Sassanid Empire as far as Spahan in central Iran. The Hephthalites issued numerous coins imitating the coinage of Khosrow II. In c.  606/607 , Khosrow recalled Smbat IV Bagratuni from Persian Armenia and sent him to Iran to repel

38456-429: The use of centering. Examples have been found in archaeological excavations in Mesopotamia dating to the 2nd and 3rd millennium BCE, which were set in gypsum mortar . A barrel vault is the simplest form of a vault and resembles a barrel or tunnel cut lengthwise in half. The effect is that of a structure composed of continuous semicircular or pointed sections. The earliest known examples of barrel vaults were built by

38665-424: The vault from the inside was the same that one saw from the outside), the European architects of the Middle Ages protected their vaults with wooden roofs. In other words, one will not see a Gothic vault from the outside. The reasons for this development are hypothetical, but the fact that the roofed basilica form preceded the era when vaults begin to be made is certainly to be taken into consideration. In other words,

38874-411: The wall, so as to bond the whole together much better; and (2) it lessened the span of the vault, which then required a centering of smaller dimensions. As soon as the ribs were completed, the web or stone shell of the vault was laid on them. In some English work each course of stone was of uniform height from one side to the other; but, as the diagonal rib was longer than either the transverse or wall rib,

39083-486: The war resumed but remained confined to Lazica, which was retained by the Byzantines when peace was concluded in 562. In 565, Justinian I died and was succeeded by Justin II (565–578), who resolved to stop subsidies to Arab chieftains to restrain them from raiding Byzantine territory in Syria. A year earlier, the Sassanid governor of Armenia, Chihor-Vishnasp of the Suren family, built a fire temple at Dvin near modern Yerevan , and he put to death an influential member of

39292-455: Was a tendency to increase their number, so that in the nave of Exeter Cathedral three intermediate ribs were provided between the wall rib and the diagonal rib. In order to mask the junction of the various ribs, their intersections were ornamented with richly carved bosses, and this practice increased on the introduction of another short rib, known as the lierne, a term in France given to the ridge rib. Lierne ribs are short ribs crossing between

39501-445: Was a tendency to raise the centres of these vaults, which became slightly domical; in all these cases centering was employed. One good example of the fan vault is that over the staircase leading to the hall of Christ Church, Oxford , where the complete conoid is displayed in its centre carried on a central column. This vault, not built until 1640, is an example of traditional workmanship, probably in Oxford transmitted in consequence of

39710-427: Was also amenable to the wishes of the Zoroastrian priesthood. During his reign, the Sassanid capital Ctesiphon was sacked by the Romans under Emperor Carus , and most of Armenia, after half a century of Persian rule, was ceded to Diocletian . Succeeding Bahram III (who ruled briefly in 293), Narseh embarked on another war with the Romans. After an early success against the Emperor Galerius near Callinicum on

39919-426: Was appointed shah (king), he moved his capital further to the south of Pars and founded Ardashir-Khwarrah (formerly Gur , modern day Firuzabad ). The city, well protected by high mountains and easily defensible due to the narrow passes that approached it, became the center of Ardashir's efforts to gain more power. It was surrounded by a high, circular wall, probably copied from that of Darabgerd. Ardashir's palace

40128-410: Was built in horizontal courses, up to about one-third of the height, and the rings above were inclined back at a slight angle, so that the bricks of each ring, laid flatwise, adhered till the ring was completed, no centering of any kind being required; the vault thus formed was elliptic in section, arising from the method of its construction. A similar system of construction was employed for the vault over

40337-447: Was captured by Shapur, remaining his prisoner for the rest of his life. Shapur celebrated his victory by carving the impressive rock reliefs in Naqsh-e Rostam and Bishapur , as well as a monumental inscription in Persian and Greek in the vicinity of Persepolis . He exploited his success by advancing into Anatolia (260), but withdrew in disarray after defeats at the hands of the Romans and their Palmyrene ally Odaenathus , suffering

40546-419: Was crowned in utero : the crown was placed upon his mother's stomach. During his youth the empire was controlled by his mother and the nobles. Upon coming of age, Shapur II assumed power and quickly proved to be an active and effective ruler. He first led his small but disciplined army south against the Arabs, whom he defeated, securing the southern areas of the empire. He then began his first campaign against

40755-443: Was defeated at the Battle of Dara . In the same year, a second Persian army under Mihr-Mihroe was defeated at Satala by Roman forces under Sittas and Dorotheus, but in 531 a Persian army accompanied by a Lakhmid contingent under Al-Mundhir III defeated Belisarius at the Battle of Callinicum , and in 532 an "eternal peace" was concluded. Kavad succeeded in restoring order in the interior and fought with general success against

40964-422: Was found easier to carve them and the web out of the solid stone, so that the rib and web were purely decorative and had no constructional or independent functions. This form of vaulting is found in English late Gothic in which the vault is constructed as a single surface of dressed stones, with the resulting conoid forming an ornamental network of blind tracery. The fan vault would seem to have owed its origin to

41173-574: Was found in Mehrgarh. In South India, the Neolithic began by 6500 BC and lasted until around 1400 BC when the Megalithic transition period began. South Indian Neolithic is characterized by Ash mounds from 2500 BC in Karnataka region, expanded later to Tamil Nadu . In East Asia, the earliest sites include the Nanzhuangtou culture around 9500–9000 BC, Pengtoushan culture around 7500–6100 BC, and Peiligang culture around 7000–5000 BC. The prehistoric Beifudi site near Yixian in Hebei Province, China, contains relics of

41382-409: Was found in the outskirts of Amman , Jordan . Considered to be one of the largest prehistoric settlements in the Near East , it was continuously inhabited from approximately 7250 BC to approximately 5000 BC. Settlements have rectangular mud-brick houses where the family lived together in single or multiple rooms. Burial findings suggest an ancestor cult where people preserved skulls of

41591-452: Was given refuge by the Hephthalite king. Jamasp (496–498) was installed on the Sasanian throne upon the deposition of Kavad I by members of the nobility. He was a good and kind king; he reduced taxes in order to improve the condition of the peasants and the poor. He was also an adherent of the mainstream Zoroastrian religion, diversions from which had cost Kavad I his throne and freedom. Jamasp's reign soon ended, however, when Kavad I, at

41800-400: Was ground into flour. Emmer wheat was domesticated, and animals were herded and domesticated ( animal husbandry and selective breeding ). In 2006, remains of figs were discovered in a house in Jericho dated to 9400 BC. The figs are of a mutant variety that cannot be pollinated by insects, and therefore the trees can only reproduce from cuttings. This evidence suggests that figs were

42009-556: Was killed by his brother Peroz in 459. At the beginning of the 5th century, the Hephthalites (White Huns), along with other nomadic groups, attacked Iran. At first Bahram V and Yazdegerd II inflicted decisive defeats against them and drove them back eastward. The Huns returned at the end of the 5th century and defeated Peroz I (457–484) in 483. Following this victory, the Huns invaded and plundered parts of eastern Iran continually for two years. They exacted heavy tribute for some years thereafter. These attacks brought instability and chaos to

42218-468: Was on the north side of the city; remains of it are extant. After establishing his rule over Pars, Ardashir rapidly extended his territory, demanding fealty from the local princes of Fars, and gaining control over the neighbouring provinces of Kerman , Isfahan , Susiana and Mesene . This expansion quickly came to the attention of Artabanus IV, the Parthian king, who initially ordered the governor of Khuzestan to wage war against Ardashir in 224, but Ardashir

42427-402: Was one of diet . Pre-agrarian diets varied by region, season, available local plant and animal resources and degree of pastoralism and hunting. Post-agrarian diet was restricted to a limited package of successfully cultivated cereal grains, plants and to a variable extent domesticated animals and animal products. Supplementation of diet by hunting and gathering was to variable degrees precluded by

42636-412: Was overthrown by a palace coup and his son Khosrow II (590–628) placed on the throne. However, this change of ruler failed to placate Bahram, who defeated Khosrow, forcing him to flee to Byzantine territory, and seized the throne for himself as Bahram VI. Khosrow asked the Byzantine Emperor Maurice (582–602) for assistance against Bahram, offering to cede the western Caucasus to the Byzantines. To cement

42845-411: Was rarely required for the building of the web, a template (Fr. cerce ) being employed to support the stones of each ring until it was complete. In Italy, Germany and Spain the French method of building the web was adopted, with horizontal courses and a domical form. Sometimes, in the case of comparatively narrow compartments, and more especially in clerestories , the wall rib was stilted, and this caused

43054-432: Was reached in Hagia Sophia, for although it formed the model on which all subsequent Byzantine churches were based, so far as their plan was concerned, no domes approaching the former in dimensions were even attempted. The principal difference in some later examples is that which took place in the form of the pendentive on which the dome was carried. Instead of the spherical spandril of Hagia Sophia, large niches were formed in

43263-494: Was returned to Roman domination, with the fort of Ziatha as its border; Caucasian Iberia would pay allegiance to Rome under a Roman appointee; Nisibis, now under Roman rule, would become the sole conduit for trade between Persia and Rome; and Rome would exercise control over the five satrapies between the Tigris and Armenia: Ingilene , Sophanene ( Sophene ), Arzanene ( Aghdznik ), Corduene , and Zabdicene (near modern Hakkâri , Turkey). The Sassanids ceded five provinces west of

43472-402: Was to be later confirmed by the Nvarsak Treaty (484). At the beginning of his reign in 441, Yazdegerd II assembled an army of soldiers from various nations, including his Indian allies, and attacked the Byzantine Empire , but peace was soon restored after some small-scale fighting. He then gathered his forces in Nishapur in 443 and launched a prolonged campaign against the Kidarites . After

43681-463: Was victorious in the ensuing battles. In a second attempt to destroy Ardashir, Artabanus himself met Ardashir in battle at Hormozgan, where the former met his death. Following the death of the Parthian ruler, Ardashir went on to invade the western provinces of the now defunct Parthian Empire. At that time the Arsacid dynasty was divided between supporters of Artabanus IV and Vologases VI , which probably allowed Ardashir to consolidate his authority in

#627372