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85-550: [REDACTED] Look up abbasi in Wiktionary, the free dictionary. Abbasi (Arabic: عباسي , Persian: عباسی ) may refer to: Abbasid Caliphate , the third Islamic caliphate Abbasi (currency) , gold and silver coins issued by Abbas I of Persia Abbasi (surname) , a Muslim surname, including a list of people with the name Abbasi Program in Islamic Studies ,

170-573: A bastion of Shia learning and politics. By 1000 they had become the chief political and ideological challenge to Sunni Islam and the Abbasids, who by this time had fragmented into several governorships that, while recognizing caliphal authority from Baghdad, remained mostly autonomous. The caliph himself was under 'protection' of the Buyid Emirs who possessed all of Iraq and Western Iran, and were quietly Shia in their sympathies. Outside Iraq, all

255-531: A carpet and trampled to death by horses on 20 February 1258. The caliph's immediate family was also executed, with the lone exceptions of his youngest son who was sent to Mongolia, and a daughter who became a slave in the harem of Hulagu. Similarly to how a Mamluk Army was created by the Abbasids, a Mamluk Army was created by the Egypt-based Ayyubid dynasty . These Mamluks decided to directly overthrow their masters and came to power in 1250 in what

340-660: A center for Islamic studies at Stanford University Dhund (tribe) or Dhund Abbasi, a tribe of northern Pakistan Bhishti , or Bahishti Abbasi, a tribe of India, Pakistan and Nepal Places [ edit ] Abbasi, Bushehr , a village in Ganaveh County, Bushehr Province, Iran Abbasi, Khuzestan , a village in Ahvaz County, Khuzestan Province, Iran Abbasi, Aligudarz , a village in Aligudarz County, Lorestan Province, Iran Abbasi, Dowreh ,

425-466: A centre of learning. The Abbasid period was marked by the use of bureaucrats (such as the Barmakid family) for governing the territories as well as an increasing inclusion of non-Arab Muslims in the ummah (Muslim community). Despite this initial cooperation, the Abbasids of the late 8th century had alienated both non-Arab mawali (clients). The political power of the caliphs was limited with

510-531: A collection of fantastical folk tales, legends and parables compiled primarily during the Abbasid era. The collection is recorded as having originated from an Arabic translation of a Sassanian-era Persian prototype, with likely origins in Indian literary traditions. Stories from Arabic , Persian , Mesopotamian, and Egyptian folklore and literature were later incorporated. The epic is believed to have taken shape in

595-697: A mosque, all surrounding inner courtyards. Mesopotamia only has one surviving mausoleum from this era, in Samarra: an octagonal domed structured known as the Qubbat al-Sulaibiyya , which is the first known monumental tomb in Islamic architecture and may be the final resting place of al-Muntasir . Anno Hegirae In the West, this era is most commonly denoted as AH ( Latin : Anno Hegirae , / ˈ æ n oʊ ˈ h ɛ dʒ ɪ r iː / , lit.   ' in

680-833: A much more Persianate culture and statecraft. Only the central lands of Mesopotamia were under direct Abbasid control, with Palestine and the Hejaz often managed by the Tulunids. Byzantium, for its part, had begun to push Arab Muslims farther east in Anatolia . By the 920s, North Africa was lost to the Fatimid dynasty , a Shia sect tracing its roots to Muhammad's daughter Fatimah . The Fatimid dynasty took control of Idrisid and Aghlabid domains, advanced to Egypt in 969, and established their capital near Fustat in Cairo , which they built as

765-485: A result. Other influential Abbasid philosophers include al-Jahiz , and Ibn al-Haytham (Alhacen). As power shifted from the Umayyads to the Abbasids, the architectural styles changed also, from Greco-Roman tradition (which features elements of Hellenistic and Roman representative style) to Eastern tradition which retained their independent architectural traditions from Mesopotamia and Persia. The Abbasid architecture

850-469: A village in Dowreh County, Lorestan Province, Iran See also [ edit ] Abasi (disambiguation) Abbas (disambiguation) Abbassi , a given name and surname Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Abbasi . If an internal link led you here, you may wish to change the link to point directly to

935-469: Is "the style of philosophy produced within the framework of Islamic culture". Islamic philosophy, in this definition is neither necessarily concerned with religious issues, nor is exclusively produced by Muslims. Their works on Aristotle were a key step in the transmission of learning from ancient Greeks to the Islamic world and the West. They often corrected the philosopher, encouraging a lively debate in

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1020-655: Is known as the Mamluk Sultanate . In 1261, following the devastation of Baghdad by the Mongols, the Mamluk rulers of Egypt re-established the Abbasid caliphate in Cairo . The first Abbasid caliph of Cairo was Al-Mustansir . The Abbasid caliphs in Egypt continued to maintain the presence of authority, but it was confined to religious matters. The Abbasid caliphate of Cairo lasted until the time of Al-Mutawakkil III , who

1105-674: Is traditionally seen as the approximate end of the Golden Age. Contemporary accounts state Mongol soldiers looted and then destroyed mosques, palaces, libraries, and hospitals. Priceless books from Baghdad's thirty-six public libraries were torn apart, the looters using their leather covers as sandals. Grand buildings that had been the work of generations were burned to the ground. The House of Wisdom (the Grand Library of Baghdad), containing countless precious historical documents and books on subjects ranging from medicine to astronomy,

1190-751: The An Lushan Rebellion against An Lushan . The Abbasids, or "Black Flags" as they were commonly called, were known in Tang dynasty chronicles as the hēiyī Dàshí , "The Black-robed Tazi" ( 黑衣大食 ) ("Tazi" being a borrowing from Persian Tāzī , the word for "Arab"). Al-Rashid sent embassies to the Chinese Tang dynasty and established good relations with them. After the war, these embassies remained in China with Caliph Harun al-Rashid establishing an alliance with China. Several embassies from

1275-559: The Golden Age of Islam . It was also during this period that Islamic manuscript production reached its height. Between the 8th and 10th centuries, Abbasid artisans pioneered and perfected manuscript techniques that became standards of the practice. This, in addition to housing several key academic institutions, including the House of Wisdom , as well as a multiethnic and multi-religious environment, garnered it an international reputation as

1360-545: The House of Wisdom in Baghdad, where both Muslim and non-Muslim scholars sought to translate and gather all the world's knowledge into Arabic . Many classic works of antiquity that would otherwise have been lost were translated into Arabic and Persian and later in turn translated into Turkish, Hebrew and Latin. During this period the Muslim world was a cauldron of cultures which collected, synthesized and significantly advanced

1445-569: The Islamic New Year does not begin January 1 and that a Hijri calendar year is about 11 days shorter than a Gregorian calendar year, there is no direct correspondence between years of the two eras. A given Hijri year will usually fall in two successive Gregorian years. A CE year will always overlap two or occasionally three successive Hijri years. For example, the year 2008 CE maps to the last week of AH 1428, all of 1429, and

1530-536: The Islamic lunar calendar , whose epoch (first year) is the year of Muhammad's Hijrah , and begins on the first day of the month of Muharram (equivalent to the Julian calendar date of July 16, 622 CE). The date of the Hijrah itself did not form the Islamic New Year . Instead, the system continues the earlier ordering of the months, with the Hijrah occurring around the 8th day of Rabi al-Awwal , 66 days into

1615-700: The Mustansiriya School , in an attempt to eclipse the Seljuq-era Nizamiyya built by Nizam al Mulk . In 1206, Genghis Khan established a powerful dynasty among the Mongols of central Asia . During the 13th century, this Mongol Empire conquered most of the Eurasian land mass, including both China in the east and much of the old Islamic caliphate (as well as Kievan Rus' ) in the west. Hulagu Khan 's destruction of Baghdad in 1258

1700-571: The Samanids had begun the process of exercising independent authority in Transoxiana and Greater Khorasan , and the succeeding Saffarid dynasty of Iran. The Saffarids , from Khorasan, nearly seized Baghdad in 876, and the Tulunids took control of most of Syria. The trend of weakening of the central power and strengthening of the minor caliphates on the periphery continued. An exception

1785-634: The siege of Baghdad by the Mongols under Hulagu Khan and the execution of al-Musta'sim . The Abbasid line of rulers re-centred themselves in the Mamluk capital of Cairo in 1261. Though lacking in political power, with the brief exception of Caliph al-Musta'in , the dynasty continued to claim religious authority until a few years after the Ottoman conquest of Egypt in 1517, with the last Abbasid caliph being al-Mutawakkil III . The Abbasid caliphs were descended from Abbas ibn Abd al-Muttalib , one of

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1870-832: The 10th century and reached its final form by the 14th century; the number and type of tales have varied from one manuscript to another. All Arabian fantasy tales were often called "Arabian Nights" when translated into English, regardless of whether they appeared in The Book of One Thousand and One Nights . This epic has been influential in the West since it was translated in the 18th century, first by Antoine Galland . Many imitations were written, especially in France. Various characters from this epic have themselves become cultural icons in Western culture, such as Aladdin , Sinbad and Ali Baba . A famous example of Islamic poetry on romance

1955-649: The Abbasid Caliphs to the Chinese court have been recorded in the Old Book of Tang , the most important being those of al-Saffah, al-Mansur, and Harun al-Rashid. In 762, al-Mansur suppressed a rebellion in the Hejaz led by al-Nafs al-Zakiyya , a descendant from Ali ibn Abi Talib , whose challenge to the Abbasid claim to leadership was based on his Alid lineage and thus presented a serious political threat. He

2040-657: The Abbasids for the titular authority of the Islamic ummah . They commanded some support in the Shia sections of Baghdad (such as Karkh ), although Baghdad was the city most closely connected to the caliphate, even in the Buyid and Seljuq eras. The challenge of the Fatimids only ended with their downfall in the 12th century. Despite the power of the Buyid amirs, the Abbasids retained a highly ritualized court in Baghdad, as described by

2125-399: The Abbasids in Baghdad. When the dynasty began to weaken in the 12th century, the Abbasids gained greater independence once again. While the caliph al-Mustarshid was the first caliph to build an army capable of meeting a Seljuk army in battle, he was nonetheless defeated and assassinated in 1135. The caliph al-Muqtafi was the first Abbasid Caliph to regain the full military independence of

2210-460: The Barmakids, who had wielded administrative power on his behalf. During the same period, several factions began either to leave the empire for other lands or to take control of distant parts of the empire. Still, the reigns of al-Rashid and his sons were considered to be the apex of the Abbasids. Domestically, Harun pursued policies similar to those of his father Al-Mahdi. He released many of

2295-492: The Buyid bureaucrat Hilal al-Sabi' , and they retained a certain influence over Baghdad as well as religious life. As Buyid power waned with the rule of Baha' al-Daula , the caliphate was able to regain some measure of strength. The caliph al-Qadir , for example, led the ideological struggle against the Shia with writings such as the Baghdad Manifesto . The caliphs kept order in Baghdad itself, attempting to prevent

2380-550: The Byzantines. Though his attempt to seize Constantinople failed when his fleet was destroyed by a storm, his military excursions were generally successful, culminating with a resounding victory in the Sack of Amorium . The Byzantines responded by sacking Damietta in Egypt, and Al-Mutawakkil responded by sending his troops into Anatolia again, sacking and marauding until they were eventually annihilated in 863. Even by 820,

2465-619: The Elephant ". The first year of the Hijra (622-23 CE) was named the "Permission to Travel" in this calendar. 17 years after the Hijra , a complaint from Abu Musa Ashaari prompted the caliph Umar to abolish the practice of named years and to establish a new calendar era . Umar chose as epoch for the new Muslim calendar the hijrah , the emigration of Muhammad and 70 Muslims from Mecca to Medina . Tradition credits Othman with

2550-526: The Islamic lunar calendar consists of twelve lunar months and has only 354 or 355 days in its year. Consequently, its New Year's Day occurs ten days earlier each year relative to the Gregorian calendar . The year 2024 CE corresponds to the Islamic years AH   1445 – 1446; AH   1446 corresponds to 2024 – 2025 in the Common Era. The Hijri era is calculated according to

2635-630: The Persian faction known as the Buyids from Daylam swept into power and assumed control over the bureaucracy in Baghdad. According to the history of Miskawayh , they began distributing iqtas ( fiefs in the form of tax farms) to their supporters. This period of localized secular control was to last nearly 100 years. The loss of Abbasid power to the Buyids would shift as the Seljuks would take over from

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2720-640: The Persians. At the end of the eighth century, the Abbasids found they could no longer keep together a polity from Baghdad, which had grown larger than that of Rome . In 793 the Zaydi -Shia dynasty of Idrisids set up a state from Fez in Morocco, while a family of governors under the Abbasids became increasingly independent until they founded the Aghlabid Emirate from the 830s. Al-Mu'tasim started

2805-528: The Umayyads and 'Alids his brother Al-Hadi had imprisoned and declared amnesty for all political groups of the Quraysh . Large scale hostilities broke out with Byzantium , and under his rule, the Abbasid Empire reached its peak. However, Harun's decision to split the succession proved to be damaging to the longevity of the empire. After Rashid's death, the empire was split by a civil war between

2890-544: The Umayyads at the Battle of Gorgan, the Battle of Nahavand and finally in the Battle of Karbala, all in the year 748. Ibrahim was captured by Marwan and was killed. The quarrel was taken up by Ibrahim's brother Abdallah, known by the name of Abu al-'Abbas as-Saffah , who defeated the Umayyads in 750 in the battle near the Great Zab and was subsequently proclaimed caliph . After this loss, Marwan fled to Egypt, where he

2975-411: The administrative changes needed to keep order of the political challenges created by the far-flung nature of the empire, and the limited communication across it. It was also during this early period of the dynasty, in particular during the governance of Al-Mansur, Harun al-Rashid, and al-Ma'mun , that its reputation and power were created. The position of wazir (vizier) developed in this period. It

3060-461: The autonomous provinces slowly took on the characteristic of de facto states with hereditary rulers, armies, and revenues and operated under only nominal caliph suzerainty, which may not necessarily be reflected by any contribution to the treasury, such as the Soomro Emirs that had gained control of Sindh and ruled the entire province from their capital of Mansura . Mahmud of Ghazni took

3145-476: The blood of Al-Musta'sim , a direct descendant of Muhammad's uncle Abbas ibn Abd al-Muttalib , and the last reigning Abbasid caliph in Baghdad, was spilled. The Shia of Persia stated that no such calamity had happened after the death of Husayn ibn Ali in the Battle of Karbala ; nevertheless, as a precaution and in accordance with a Mongol taboo which forbade spilling royal blood, Hulagu had Al-Musta'sim wrapped in

3230-409: The calendar year is entirely determined by solar observation or calculation. Each year begins on the northward equinox . By the age of Muhammad, there was already an Arabian lunar calendar , with named months. Likewise, the years of its calendar used conventional names rather than numbers: for example, the year of the birth of Muhammad and of Ammar ibn Yasir (570 CE) was known as the " Year of

3315-524: The caliph al-Amin and his brother al-Ma'mun , who had the support of Khorasan. This war ended with a two-year siege of Baghdad and the eventual death of Al-Amin in 813. Al-Ma'mun ruled for 20 years of relative calm interspersed with a rebellion in Azerbaijan by the Khurramites , which was supported by the Byzantines. Al-Ma'mun was also responsible for the creation of an autonomous Khorasan, and

3400-587: The caliph al-Qa'im was unable to defeat him without outside help. Toghril Beg , the Seljuq sultan, restored Baghdad to Sunni rule and took Iraq for his dynasty. Once again, the Abbasids were forced to deal with a military power that they could not match, though the Abbasid caliph remained the titular head of the Islamic community. The succeeding sultans Alp Arslan and Malikshah , as well as their vizier Nizam al-Mulk , took up residence in Persia, but held power over

3485-459: The caliph al-Radi (934–941) was forced to acknowledge their power by creating the position of "Prince of Princes" ( amir al-umara ). In addition, the power of the Mamluks steadily grew, reaching a climax when al-Radi was constrained to hand over most of the royal functions to the non-Arab Muhammad ibn Ra'iq . Al-Mustakfi had a short reign from 944 to 946, and it was during this period that

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3570-506: The caliphal court in Baghdad during the early 9th century, while others such as al-Mutanabbi received their patronage from regional courts. Under Harun al-Rashid, Baghdad was renowned for its bookstores, which proliferated after the making of paper was introduced. Chinese papermakers had been among those taken prisoner by the Arabs at the Battle of Talas in 751. As prisoners of war, they were dispatched to Samarkand , where they helped set up

3655-676: The caliphate were minimal while the Byzantine Empire was fighting Abbasid rule in Syria and Anatolia , with focus shifting primarily to internal matters; Abbasid governors exerted greater autonomy and, using this increasing power, began to make their positions hereditary. While Baghdad remained the official capital, Harun al-Rashid chose to reside in Raqqa from 796 until the end of his reign. In 803, for reasons that remain unclear, Harun al-Rashid turned on and imprisoned or killed most of

3740-538: The caliphate, with the help of his vizier Ibn Hubayra . After nearly 250 years of subjection to foreign dynasties, he successfully defended Baghdad against the Seljuqs in the siege of Baghdad (1157) , thus securing Iraq for the Abbasids. The reign of al-Nasir (d. 1225) brought the caliphate back into power throughout Iraq, based in large part on the Sufi futuwwa organizations that the caliph headed. Al-Mustansir built

3825-561: The caliphs were wary of the Alid sympathies in the city and did not always reside here. In 752, al-Saffah built a new city called al-Hashimiyya, at an uncertain location, most likely near Kufa. Later that same year, he moved to Anbar , where he built a new settlement for his Khurasani soldiers and a palace for himself. It was al-Saffah's successor, Abu Ja'far al-Mansur ( r.  754–775 ) who firmly consolidated Abbasid rule and faced down internal challenges. His uncle, Abdallah ibn Ali ,

3910-448: The capital from Damascus to Baghdad. The Abbasids were influenced by the Qur'anic injunctions and hadith , such as "the ink of a scholar is more holy than the blood of a martyr", stressing the value of knowledge. During this period the Muslim world became an intellectual center for science, philosophy, medicine and education as the Abbasids championed the cause of knowledge and established

3995-575: The city of Raqqa , along the Euphrates . Finally, in 836, al-Mu'tasim moved the capital to a new site that he created along the Tigris, called Samarra. This city saw 60 years of work, with race-courses and game preserves to add to the atmosphere. Due to the dry remote nature of the environment, some of the palaces built in this era were isolated havens. Al-Ukhaidir Fortress is a fine example of this type of building, which has stables, living quarters, and

4080-422: The civil service. In 794, Jafa al-Barmak built the first paper mill in Baghdad, and from there the technology circulated. Harun required that paper be employed in government dealings, since something recorded on paper could not easily be changed or removed, and eventually, an entire street in Baghdad's business district was dedicated to selling paper and books. One of the common definitions for "Islamic philosophy"

4165-435: The continued repulsing of Byzantine forays. In the 9th century, the Abbasids created an army loyal only to their caliphate, composed of non-Arab origin people, known as Mamluks . This force, created by al-Ma'mun and his brother and successor al-Mu'tasim (833–842), prevented the further disintegration of the empire. The Mamluk army, though often viewed negatively, both helped and hurt the caliphate. Early on, it provided

4250-534: The downward slide by using non-Muslim mercenaries in his personal army. Also during this period, officers started assassinating superiors with whom they disagreed, in particular the caliphs. By the 870s, Egypt became autonomous under Ahmad ibn Tulun . In the East, governors decreased their ties to the center as well. The Saffarids of Herat and the Samanids of Bukhara began breaking away around this time, cultivating

4335-418: The easterly region of Khorasan , far from the Levantine center of Umayyad influence. The Abbasid Caliphate first centered its government in Kufa , modern-day Iraq, but in 762 the caliph al-Mansur founded the city of Baghdad, near the ancient Babylonian capital city of Babylon and Sassanid city of Ctesiphon . Baghdad became the center of science , culture , and invention in what became known as

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4420-476: The end of the previous lunar cycle and hence the previous month, thereby beginning the new month. Consequently, each month can have 29 or 30 days depending on the visibility of the moon, astronomical positioning of the earth and weather conditions. However, certain sects and groups, most notably Bohras Muslims namely Alavis , Dawoodis and Sulaymanis and Shia Ismaili Muslims, use a tabular Islamic calendar in which odd-numbered months have thirty days (and also

4505-400: The first Arab paper mill. In time, paper replaced parchment as the medium for writing, and the production of books greatly increased. These events had an academic and societal impact that could be broadly compared to the introduction of the printing press in the West. Paper aided in communication and record-keeping, it also brought a new sophistication and complexity to businesses, banking, and

4590-416: The first few days of 1430. Similarly, the year 1976 CE corresponded with the last few days of AH 1395, all of 1396, and the first week of 1397. The Hijri year has twelve months, whose precise lengths vary by sect of Islam. Each month of the Islamic calendar commences on the birth of the new lunar cycle. Traditionally this is based on actual observation of the moon's crescent ( hilal ) marking

4675-428: The first major changes effected by Abbasid rule was the move of the caliphate's center of power from Syria to Mesopotamia (present-day Iraq). This was closer to the Persian mawali support base of the Abbasids and the move addressed their demand for reduced Arab dominance in the empire. However, no definitive capital was yet selected. In these early Abbasid years, Kufa generally served as the administrative capital, but

4760-435: The first year. Unlike Sunnis, Twelver Shias start the Hijri year with the month of the Hijra, Rabi' al-Awwal, rejecting that Muharram is the start of a new year. As a result of this, the dates of some events are described differently by one year. For example, Shias state that the Muharram-transpiring battle of Karbala occurred 60 years after the Hijra, while Sunnis state it to have occurred 61 years after. In Shia Islam,

4845-409: The government with a stable force to address domestic and foreign problems. However, creation of this foreign army and al-Mu'tasim's transfer of the capital from Baghdad to Samarra created a division between the caliphate and the people they claimed to rule. Al-Mu'tasim's reign marked the end of the strong caliphs. He strengthened his personal army with the Mamluks and promptly restarted the war with

4930-621: The intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Abbasi&oldid=1254424972 " Category : Disambiguation pages Hidden categories: Articles containing Arabic-language text Articles containing Persian-language text Short description is different from Wikidata All article disambiguation pages All disambiguation pages Abbasid Caliphate The Abbasid Caliphate or Abbasid Empire ( / ə ˈ b æ s ɪ d , ˈ æ b ə s ɪ d / ; Arabic : الْخِلَافَة الْعَبَّاسِيَّة , romanized :  al-Khilāfa al-ʿAbbāsiyya )

5015-431: The knowledge gained from the Roman , Chinese, Indian , Persian , Egyptian , North African, Ancient Greek and Medieval Greek civilizations. According to Huff, "[i]n virtually every field of endeavor—in astronomy, alchemy, mathematics, medicine, optics and so forth—the Caliphate's scientists were in the forefront of scientific advance." The best-known fiction from the Islamic world is One Thousand and One Nights ,

5100-417: The outbreak of fitnas in the capital, often contending with the ayyarun . With the Buyid dynasty on the wane, a vacuum was created that was eventually filled by the dynasty of Oghuz Turks known as the Seljuqs . By 1055, the Seljuqs had wrested control from the Buyids and Abbasids, and took temporal power. When the amir and former slave Basasiri took up the Shia Fatimid banner in Baghdad in 1056–57,

5185-474: The region also appear to have served as "capitals" under either al-Saffah or al-Mansur prior to the founding of Baghdad. Al-Mansur centralised the judicial administration, and later, Harun al-Rashid established the institution of Chief Qadi to oversee it. The Umayyad empire was mostly Arab; however, the Abbasids progressively became made up of more and more converted Muslims in which the Arabs were only one of many ethnicities. The Abbasids had depended heavily on

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5270-403: The return of power to the family of Muhammad, the Hashemites , during the reign of Umar II . During the reign of Marwan II , this opposition culminated in the rebellion of Ibrahim al-Imam , the fourth in descent from Abbas. Supported by the province of Khorasan (Eastern Persia), even though the governor opposed them, and the Shia Arabs, he achieved considerable success, but was captured in

5355-480: The rise of the Iranian Buyids and the Seljuq Turks , who captured Baghdad in 945 and 1055, respectively. Although Abbasid leadership over the vast Islamic empire was gradually reduced to a ceremonial religious function in much of the caliphate, the dynasty retained control of its Mesopotamian domain during the rule of Caliph al-Muqtafi and extended into Iran during the reign of Caliph al-Nasir . The Abbasids' age of cultural revival and fruition ended in 1258 with

5440-402: The spirit of ijtihad . They also wrote influential original philosophical works, and their thinking was incorporated into Christian philosophy during the Middle Ages, notably by Thomas Aquinas . Three speculative thinkers, al-Kindi , al-Farabi , and Avicenna , combined Aristotelianism and Neoplatonism with other ideas introduced through Islam, and Avicennism was later established as

5525-434: The successful proposal, simply continuing the order of the months that had already been established by Muhammad , beginning with Muharram , as there was no set order of months during the pre-Islamic era (Age of Ignorance - Jahiliya ). Adoption of this calendar was then enforced by Umar. Different approximate conversion formulas between the Gregorian (AD or CE) and Islamic calendars (AH) are possible: or Given that

5610-461: The support of Persians in their overthrow of the Umayyads. Al-Mansur welcomed non-Arab Muslims to his court. While this helped integrate Arab and Persian cultures, it alienated many of their Arab supporters, particularly the Khorasanian Arabs who had supported them in their battles against the Umayyads. The Abbasid leadership had to work hard in the last half of the 8th century (750–800) under several competent caliphs and their viziers to usher in

5695-494: The title of sultan , as opposed to the "amir" that had been in more common usage, signifying the Ghaznavid Empire 's independence from caliphal authority, despite Mahmud's ostentatious displays of Sunni orthodoxy and ritual submission to the caliph. In the 11th century, the loss of respect for the caliphs continued, as some Islamic rulers no longer mentioned the caliph's name in the Friday khutba , or struck it off their coinage. The Isma'ili Fatimid dynasty of Cairo contested

5780-434: The treaty, then fended off multiple incursions during the first decade of the 9th century. These attacks pushed into the Taurus Mountains , culminating with a victory at the Battle of Krasos and the massive invasion of 806 , led by Rashid himself. Rashid's navy also proved successful, taking Cyprus . Rashid decided to focus on the rebellion of Rafi ibn al-Layth in Khorasan and died while there. Military operations by

5865-438: The victor over the Umayyads at the Battle of the Zab, was the most serious potential rival for leadership and al-Mansur sent Abu Muslim, the Khurasani revolutionary commander, against him in 754. After Abu Muslim successfully defeated him, al-Mansur then turned to eliminate Abu Muslim himself. He arranged to have him arrested and executed in 755. On the western frontier, the Abbasids were unable to re-assert caliphal control over

5950-419: The western and central Maghreb, which the Umayyads had lost in the 740s. One member of the Umayyad dynasty, Abd ar-Rahman, also managed to escape the purge of his family and managed to establish independent in rule in al-Andalus (present-day Spain and Portugal) in 756, founding the Umayyad Emirate of Córdoba . In 756, al-Mansur had also sent over 4,000 Arab mercenaries to assist the Chinese Tang dynasty in

6035-437: The year 747 and died, possibly assassinated, in prison. On 9 June 747 (15 Ramadan AH 129), Abu Muslim , rising from Khorasan, successfully initiated an open revolt against Umayyad rule, which was carried out under the sign of the Black Standard . Close to 10,000 soldiers were under Abu Muslim's command when the hostilities officially began in Merv. General Qahtaba followed the fleeing governor Nasr ibn Sayyar west defeating

6120-526: The year of the Hijra ' ) in parallel with the Christian / Common (AD/CE) and Jewish eras (AM) and can similarly be placed before (preferably) or after the date. In predominantly Muslim countries , it is also commonly abbreviated H ("Hijra") from its Arabic abbreviation hāʾ ( هـ ). Years prior to AH 1 are reckoned in English as BH ("Before the Hijra"), which should follow the date. A year in

6205-463: The youngest uncles of Muhammad and of the same Banu Hashim clan. The Abbasids claimed to be the true successors of Muhammad in replacing the Umayyad descendants of Banu Umayya by virtue of their closer bloodline to Muhammad. The Abbasids also distinguished themselves from the Umayyads by attacking their moral character and administration in general. According to Ira Lapidus , "The Abbasid revolt

6290-602: Was Layla and Majnun , an originally Arabic story which was further developed by Iranian , Azerbaijani and other poets in the Persian , Azerbaijani , and Turkish languages. It is a tragic story of undying love much like the later Romeo and Juliet . Arabic poetry reached its greatest height in the Abbasid era, especially before the loss of central authority and the rise of the Persianate dynasties. Writers like Abu Tammam and Abu Nuwas were closely connected to

6375-475: Was defeated by an Abbasid army led by Isa ibn Musa . It was after this victory, in 762, that al-Mansur finally established a proper Abbasid capital, Baghdad – officially called Madinat al-Salam ('City of Peace') – located on the Tigris River . Prior to this, he had continued to consider multiple sites for a capital, including al-Hashimiyya, which he used as a capital for a while. Various other sites in

6460-437: Was destroyed. Claims have been made that the Tigris ran red from the blood of the scientists and philosophers killed. Citizens attempted to flee, but were intercepted by Mongol soldiers who killed in abundance, sparing no one, not even children. The caliph Al-Musta'sim was captured and forced to watch as his citizens were murdered and his treasury plundered. Ironically, Mongols feared that a supernatural disaster would strike if

6545-518: Was initially akin to a secretary, but under the tenure of the Barmakids , an Iranian family close to the Abbasids, the position became powerful and Harun al-Rashid delegated state affairs to them for many years. This resulted in a more ceremonial role for many Abbasid caliphs relative to their time under the Umayyads; the viziers began to exert greater influence, and the role of the Caliph's aristocracy

6630-407: Was lost due to the ephemeral nature of the stucco and luster tiles. Another major development was the creation or vast enlargement of cities as they were turned into the capital of the empire, beginning with the creation of Baghdad in 762, which was planned as a walled city with four gates, and a mosque and palace in the center. Al-Mansur, who was responsible for the creation of Baghdad, also planned

6715-468: Was particularly influenced by Sasanian architecture , which in turn featured elements present since ancient Mesopotamia. The Christian styles evolved into a style based more on the Sasanian Empire , utilizing mud bricks and baked bricks with carved stucco. Other architectural innovations and styles were few, such as the four-centered arch , and a dome erected on squinches . Unfortunately, much

6800-548: Was slowly replaced by a Baramkid bureaucracy. To the west, Harun al-Rashid agreed to grant the province of Ifriqiya (centered in present-day Tunisia) as a hereditary emirate to Ibrahim ibn al-Aghlab , who founded the Aghlabid dynasty there. Al-Mahdi restarted the fighting with the Byzantines , and his sons continued the conflict until Empress Irene pushed for peace. After several years of peace, Nikephoros I broke

6885-466: Was subsequently killed. The remainder of his family, barring one male, were also eliminated. Immediately after their victory, al-Saffah sent his forces to Central Asia , where his forces fought against Tang expansion during the Battle of Talas . Al-Saffah focused on putting down numerous rebellions in Syria and Mesopotamia . The Byzantines conducted raids during these early distractions. One of

6970-460: Was supported largely by Arabs, mainly the aggrieved settlers of Merv with the addition of the Yemeni faction and their Mawali ". The Abbasids also appealed to non-Arab Muslims, known as mawali , who remained outside the kinship-based society of the Arabs and were perceived as a lower class within the Umayyad empire. Muhammad ibn 'Ali , a great-grandson of Abbas, began to campaign in Persia for

7055-591: Was taken away as a prisoner by Selim I to Constantinople where he had a ceremonial role. He died in 1543, following his return to Cairo. The Abbasid historical period lasting to the Mongol conquest of Baghdad in 1258 CE is considered the Islamic Golden Age. The Islamic Golden Age was inaugurated by the middle of the 8th century by the ascension of the Abbasid Caliphate and the transfer of

7140-406: Was the 10-year period of Al-Mu'tadid 's rule ( r. 892–902). He brought parts of Egypt, Syria, and Khorasan back into Abbasid control. Especially after the " Anarchy at Samarra " (861–870), the Abbasid central government was weakened and centrifugal tendencies became more prominent in the caliphate's provinces. By the early 10th century, the Abbasids almost lost control of Iraq to various emirs , and

7225-672: Was the third caliphate to succeed the Islamic prophet Muhammad . It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abd al-Muttalib (566–653 CE ), from whom the dynasty takes its name. They ruled as caliphs for most of the caliphate from their capital in Baghdad in modern-day Iraq, after having overthrown the Umayyad Caliphate in the Abbasid Revolution of 750 CE (132  AH ). The Abbasid Revolution had its origins and first successes in

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