127-530: Timeline Italia (in both the Latin and Italian languages), also referred to as Roman Italy , was the homeland of the ancient Romans . According to Roman mythology , Italy was the ancestral home promised by Jupiter to Aeneas of Troy and his descendants, Romulus and Remus , who were the founders of Rome . Aside from the legendary accounts, Rome was an Italic city-state that changed its form of government from Kingdom to Republic and then grew within
254-577: A Pragmatic sanction which maintained most of the organization of Diocletian . The "Prefecture of Italy" thus survived, and was reestablished under Roman control in the course of Justinian 's Gothic War . As a result of the Lombard invasion in 568, the Byzantines lost most of Italy, except the territories of the Exarchate of Ravenna – a corridor from Venice to Lazio via Perugia – and footholds in
381-727: A Social War in the middle of Italy. However, Roman citizenship was recognized to the rest of the Italians by the end of the conflict and then extended to Cisalpine Gaul when Julius Caesar became Roman dictator . In the context of the transition from Republic to Principate , Italy swore allegiance to Octavian Augustus and was then organized in eleven regions from the Alps to the Ionian Sea with more than two centuries of stability afterward. Several emperors made notable accomplishments in this period: Claudius incorporated Britain into
508-620: A ceremony in the Temple of Jupiter . From Ravenna, Diocletian left for the Danube. There, possibly in Galerius's company, he took part in a campaign against the Carpi. He contracted a minor illness while on campaign, but his condition quickly worsened and he chose to travel in a litter . In the late summer, he left for Nicomedia. On 20 November 304, he appeared in public to dedicate the opening of
635-550: A cruel and oppressive tyrant. Julianus' forces were weak, and were handily dispersed when Carinus' armies moved from Britain to northern Italy. As the leader of the united East, Diocletian was clearly the greater threat. Over the winter of 284–85, Diocletian advanced west across the Balkans . In the spring, some time before the end of May, his armies met Carinus' across the river Margus ( Great Morava ) in Moesia . In modern accounts,
762-559: A lieutenant. According to Eutropius , Diocletian raised his fellow-officer Maximian to the office of Caesar , making him his heir and effective co-ruler. The concept of dual rulership was not new to the Roman Empire. Augustus , the first emperor, had nominally shared power with his colleagues, and a formal office of co-emperor (co- Augustus ) had existed from Marcus Aurelius onward. Most recently, Emperor Carus and his sons had ruled together, albeit unsuccessfully. Diocletian
889-582: A line of succession. Galerius and Constantius would become Augusti after the departure of Diocletian and Maximian. Maximian's son Maxentius and Constantius's son Constantine would then become Caesars. In preparation for their future roles, Constantine and Maxentius were taken to Diocletian's court in Nicomedia. Diocletian spent the spring of 293 travelling with Galerius from Sirmium ( Sremska Mitrovica , Serbia ) to Byzantium ( Istanbul , Turkey ). Diocletian then returned to Sirmium, where he remained for
1016-608: A public ceremony at Antioch , the official version of events was clear: Galerius was responsible for the defeat; Diocletian was not. Diocletian publicly humiliated Galerius, forcing him to walk for a mile at the head of the Imperial caravan, still clad in the purple robes of the Emperor. Galerius was 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
1143-412: A restorer, a figure of authority whose duty it was to return the empire to peace, to recreate stability and justice where barbarian hordes had destroyed it. He arrogated, regimented and centralized political authority on a massive scale. In his policies, he enforced an Imperial system of values on diverse and often unreceptive provincial audiences. In the Imperial propaganda from the period, recent history
1270-592: A revolt swept the region after Galerius's departure. The usurper Domitius Domitianus declared himself Augustus in July or August 297. Much of Egypt, including Alexandria , recognized his rule. Diocletian moved into Egypt to suppress him, first putting down rebels in the Thebaid in the autumn of 297, then moving on to besiege Alexandria. Domitianus died in December 297, by which time Diocletian had secured control of
1397-493: A statement that he was aged 68 at death (alongside other evidence). His parents were of low status; Eutropius records "that he is said by most writers to have been the son of a scribe, but by some to have been a freedman of a senator called Anulinus." The first forty years of his life are mostly obscure. Diocletian was considered an Illyricianus ( Illyrian ) who had been schooled and promoted by Aurelian . The 12th-century Byzantine chronicler Joannes Zonaras states that he
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#17327663081301524-404: A statue of Jupiter, his patron deity, Diocletian addressed the crowd. With tears in his eyes, he told them of his weakness, his need for rest, and his will to resign. He declared that he needed to pass the duty of empire on to someone stronger. He thus became the first (and arguably only) Roman emperor to voluntarily abdicate his title. Most in the crowd believed that Constantine and Maxentius,
1651-426: A time of civil war, savage despotism, and imperial collapse. In those inscriptions that bear their names, Diocletian, the "founder of eternal peace", and his companions are referred to as "restorers of the whole world", men who succeeded in "defeating the nations of the barbarians, and confirming the tranquility of their world". The theme of restoration was conjoined to an emphasis on the uniqueness and accomplishments of
1778-703: A victory in the ongoing conflict with Persia , and Diocletian was hailed as the "founder of eternal peace". The events might have represented a formal end to Carus's eastern campaign, which probably ended without an acknowledged peace. At the conclusion of discussions with the Persians, Diocletian re-organized the Mesopotamian frontier and fortified the city of Circesium (Buseire, Syria) on the Euphrates . Maximian's campaigns were not proceeding as smoothly. The Bagaudae had been easily suppressed, but Carausius ,
1905-632: A way military power and dynastic claims could not. After his acclamation, Maximian was dispatched to fight the rebel Bagaudae , insurgent peasants of Gaul. Diocletian returned to the East, progressing slowly. By 2 November, he had only reached Civitas Iovia (Botivo, near Ptuj , Slovenia ). In the Balkans during the autumn of 285, he encountered a tribe of Sarmatians who demanded assistance. The Sarmatians requested that Diocletian either help them recover their lost lands or grant them pasturage rights within
2032-402: Is unclear. At the conclusion of the peace, Tiridates regained both his throne and the entirety of his ancestral claim. Rome secured a wide zone of cultural influence, which led to a wide diffusion of Syriac Christianity from a center at Nisibis in later decades, and the eventual Christianization of Armenia. To strengthen the defence of the east Diocletian had a fortified road constructed at
2159-531: The imperium domi (police power) as an alternative to the imperium militiae (military power). Italy's inhabitants included Roman citizens , communities with Latin Rights , and socii . The period between the end of the 2nd century BC and the 1st century BC was turbulent , beginning with the Servile Wars , continuing with the opposition of aristocratic élite to populist reformers and leading to
2286-521: The fasces in place of Carinus and Numerian. Bassus was a member of a senatorial family from Campania , a former consul and proconsul of Africa, chosen by Probus for signal distinction. He was skilled in areas of government where Diocletian presumably had no experience. Diocletian's elevation of Bassus symbolized his rejection of Carinus' government in Rome, his refusal to accept second-tier status to any other emperor, and his willingness to continue
2413-532: The Alamanni . Diocletian invaded Germania through Raetia while Maximian progressed from Mainz. Each burned crops and food supplies as he went, destroying the Germans' means of sustenance. The two men added territory to the empire and allowed Maximian to continue preparations against Carausius without further disturbance. On his return to the East, Diocletian managed what was probably another rapid campaign against
2540-584: The Crisis of the Third Century the Roman Empire was on the verge of disintegration under the combined pressures of invasions, military anarchy, civil wars, and hyperinflation. In 284, Emperor Diocletian restored political stability. He carried out thorough administrative reforms to maintain order. He created the so-called Tetrarchy whereby the empire was ruled by two senior emperors called Augusti and two junior vice-emperors called Caesars . He decreased
2667-607: The Dioecesis Italiciana . It included Raetia . It was subdivided into the following provinces: Constantine subdivided the Empire into four praetorian prefectures . The Diocesis Italiciana became the Praetorian prefecture of Italy ( praefectura praetoria Italiae ), and was subdivided into two dioceses. It still included Raetia . The two dioceses and their provinces were: Diocesis Italia annonaria (Italy of
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#17327663081302794-645: The Edict of Thessalonica under Theodosius I . Italy was invaded several times by the wandering Germanic peoples and fell under the control of Odoacer , when Romulus Augustus was deposed in 476 AD. Since then, no single authority was established in Italy as a whole except for a brief Period when the Byzantine Empire reconquered Italy. Even the modern Republic of Italy only consists of most of Italian region , excluding Corsica and some other areas. Following
2921-557: The Quadi and Marcomanni immediately after the Battle of the Margus. He eventually made his way to northern Italy and made an imperial government, but it is not known whether he visited Rome at this time. There is a contemporary issue of coins suggestive of an imperial adventus (arrival) for the city, but some modern historians state that Diocletian avoided the city, to demonstrate that
3048-710: The Roman expansion in the peninsula , when Rome formed a permanent association with most of the local tribes and cities. The strength of the Italian confederacy was a crucial factor in the rise of Rome , starting with the Punic and Macedonian wars between the 3rd and 2nd century BC. As Roman provinces were being established throughout the Mediterranean, Italy maintained a special status with political, religious and financial privileges. In Italy, Roman magistrates exercised
3175-489: The Sarmatians . Diocletian replaced the prefect of Rome with his consular colleague Bassus. Most officials who had served under Carinus, however, retained their offices under Diocletian. In an act of clementia denoted by the epitomator of Aurelius Victor as unusual, Diocletian did not kill or depose Carinus's traitorous praetorian prefect and consul Aristobulus , but confirmed him in both roles. He later gave him
3302-459: The Tetrarchy , from a Greek term meaning "rulership by four". The Tetrarchs were more or less sovereign in their own lands, and they travelled with their own imperial courts, administrators, secretaries, and armies. They were joined by blood and marriage; Diocletian and Maximian now styled themselves as brothers, and formally adopted Galerius and Constantius as sons. These relationships implied
3429-558: The annona - its inhabitants had the obligation to provide the court, the administration and the troops, first allocated in Milan and then in Ravenna, supplies, wine and timber) Diocesis Italia suburbicaria (Italy "under the government of the urbs ", i.e. Rome) In 330, Constantine completed the rebuilding of Byzantium as Constantinople . He established the Imperial court, a Senate, financial and judicial administrations, as well as
3556-577: The second encounter , Roman forces seized Narseh's camp, his treasury, his harem, and his wife. Galerius continued down the Tigris, and took the Persian capital Ctesiphon before returning to Roman territory along the Euphrates. Narseh sent an ambassador to Galerius to plead for the return of his wives and children in the course of the war, but Galerius dismissed him. Serious peace negotiations began in
3683-649: The "Aurelius Valerius" family. The relationship between Diocletian and Maximian was quickly couched in religious terms. Around 287 Diocletian assumed the title Iovius (Jovius), and Maximian assumed the title Herculius (Hercules). The titles were probably meant to convey certain characteristics of their associated leaders. Diocletian, in Jovian style, would take on the dominating roles of planning and commanding; Maximian, in Herculian mode, would act as Jupiter's heroic subordinate. For all their religious connotations,
3810-748: The East and West respectively, established themselves at Nicomedia , in north-western Anatolia (closer to the Persian frontier in the east) and Milan , in northern Italy (closer to the European frontiers) respectively. The seats of the Caesars were Augusta Treverorum (on the River Rhine frontier) for Constantius Chlorus and Sirmium (on the River Danube frontier) for Galerius , who also resided at Thessaloniki. Under Diocletian Italy became
3937-607: The Eastern provinces soon thereafter. He returned with haste to the West, reaching Emesa by 10 May 290, and Sirmium on the Danube by 1 July 290. Diocletian met Maximian in Milan either in late December 290 or January 291. The meeting was undertaken with a sense of solemn pageantry. The emperors spent most of their time in public appearances. It has been surmised that the ceremonies were arranged to demonstrate Diocletian's continuing support for his faltering colleague. A deputation from
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4064-535: The Egyptian countryside. Alexandria, whose defense was organized under Domitianus's former corrector Aurelius Achilleus , held out probably until March 298. Later in 298, the triumphal column now known as Pompey's Pillar was erected in Alexandria to honor Diocletian. Bureaucratic affairs were completed during Diocletian's stay: a census took place, and Alexandria, in punishment for its rebellion, lost
4191-436: The Imperial boundaries. Christianity then began to establish itself as the dominant religion from Constantine 's reign (306–337), raising the power of Eastern metropolises, later grouped into Pentarchy . Although not founded as a capital city in 330, Constantinople grew in importance. It finally gained the rank of eastern capital when given an praefectus urbi in 359 and the senators who were clari became senators of
4318-470: The Imperial household. This post earned him the honor of a consulship in 283. Carus's death, amid a successful war with Persia and in mysterious circumstances – he was believed to have been struck by lightning or killed by Persian soldiers – left his sons Numerian and Carinus as the new Augusti . Carinus quickly made his way to Rome from his post in Gaul and arrived there by January 284, becoming
4445-584: The Lower Danube extolled restored tranquility to the region. The defense came at a heavy cost but was a significant achievement in an area difficult to defend. Galerius, meanwhile, was engaged during 291–293 in disputes in Upper Egypt , where he suppressed a regional uprising. He returned to Syria in 295 to fight the revanchist Persian empire. Diocletian's attempts to bring the Egyptian tax system in line with Imperial standards stirred discontent, and
4572-477: The Roman Empire, Vespasian subjugated the Great Revolt of Judea and reformed the financial system, Trajan conquered Dacia and defeated Parthia , and Marcus Aurelius epitomized the ideal of the philosopher king . During these centuries of imperial stability , Italy was referred to as rectrix mundi ("governor of the world") and omnium terrarum parens ("parent of all lands"). The Crisis of
4699-508: The Roman Senate met with the emperors, renewing its infrequent contact with the Imperial office. The choice of Milan over Rome further snubbed the capital's pride. But then it was already a long-established practice that Rome itself was only a ceremonial capital, as the actual seat of the Imperial administration was determined by the needs of defense. Long before Diocletian, Gallienus (r. 253–68) had chosen Milan for his headquarters. If
4826-621: The Third Century hit Italy particularly hard, but the Roman empire managed to survive and reconquer breakaway regions. In 286 AD, the Emperor Diocletian moved the imperial residence associated with the western provinces (the later Western Roman Empire ) from Rome to Mediolanum . Meanwhile, the islands of Corsica , Sardinia , Sicily and Malta were added to Italy by Diocletian in 292 AD, and Italian cities such as Mediolanum and Ravenna continued to serve as de facto capitals for
4953-544: The West. Although, in late antiquity , Italy was also sub-divided into provinces, it remained the centre of the Western Roman Empire and had a status that gave her the name of domina provinciarum ("ruler of the provinces") by glossators of the Corpus Iuris Civilis . The Bishop of Rome had gained importance gradually from the reign of Constantine , and was given religious primacy with
5080-555: The ability to mint independently. Diocletian's reforms in the region, combined with those of Septimius Severus , brought Egyptian administrative practices much closer to Roman standards. Diocletian travelled south along the Nile the following summer, where he visited Oxyrhynchus and Elephantine . In Nubia, he made peace with the Nobatae and Blemmyes tribes. Under the terms of the peace treaty Rome's borders moved north to Philae and
5207-653: The apocalypse. Diocletian entered the city of Rome in the early winter of 303. On 20 November, he celebrated, with Maximian, the twentieth anniversary of his reign ( vicennalia ), the tenth anniversary of the Tetrarchy ( decennalia ), and a triumph for the war with Persia. Diocletian soon grew impatient with the city, as the Romans acted towards him with what Edward Gibbon , following Lactantius , calls "licentious familiarity". The Roman people did not give enough deference to his supreme authority; they expected him to act
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5334-558: The archaeological evidence, is that Carausius had held some important military post in Britain, already had a firm basis of power in Britain and Northern Gaul, and profited from the lack of legitimacy of the central government. Carausius strove to have his legitimacy as a junior emperor acknowledged by Diocletian: in his coinage, he extolled the "concord" between him and the central power. One bronze piece from 290 read PAX AVGGG, "the Peace of
5461-507: The autumn of 302. He ordered that the deacon Romanus of Caesarea have his tongue removed for defying the order of the courts and interrupting official sacrifices. Romanus was then sent to prison, where he was executed on 17 November 303. Diocletian left the city for Nicomedia in the winter, accompanied by Galerius. According to Lactantius, Diocletian and Galerius argued over imperial policy towards Christians while wintering at Nicomedia in 302. Diocletian believed that forbidding Christians from
5588-406: The average reign of a Roman Emperor was just 18 months, down from average just over 9 years during the first centuries of the Empire. Diocletian Diocletian ( / ˌ d aɪ . ə ˈ k l iː ʃ ən / DYE -ə- KLEE -shən ; Latin : Gaius Aurelius Valerius Diocletianus ; Ancient Greek : Διοκλητιανός , romanized : Diokletianós ; 242/245 – 311/312), nicknamed Jovius ,
5715-639: The blade, and high-status Manicheans must be sent to work in the quarries of Proconnesus ( Marmara Island , Turkey) or the mines of Phaeno in southern Palestine . All Manichean property was to be seized and deposited in the imperial treasury . Diocletian found much to be offended by in Manichean religion: its novelty, its alien origins, its perceived corruption of Roman morals, and its inherent opposition to long-standing religious traditions. His reasons for opposing Manichaeanism were also applied to his next target, Christianity. Diocletian returned to Antioch in
5842-454: The bureaucracy and military would be sufficient to appease the gods, but Galerius pushed for extermination. The two men sought the advice of the oracle of Apollo at Didyma . The oracle responded that the impious on Earth hindered Apollo's ability to provide advice. Rhetorically Eusebius records the Oracle as saying "The just on Earth..." These impious, Diocletian was informed by members of
5969-422: The circus beside his palace. He collapsed soon after the ceremonies. Over the winter of 304–05 he kept within his palace at all times. Rumors spread through the city that Diocletian's death was being kept secret until Galerius could assume power. On 13 December, it was falsely announced that Diocletian had killed himself. The city was sent into mourning from which it recovered after public declarations that Diocletian
6096-493: The city and its Senate were no longer politically relevant to the affairs of the empire. Diocletian dated his reign from his elevation by the army, not his ratification by the Senate, following the practice established by Carus, who had declared the Senate's ratification a useless formality. However, Diocletian offered proof of his deference towards the Senate by retaining Aristobulus as ordinary consul and colleague for 285 (one of
6223-957: The context of a peninsula dominated by the Gauls , Ligures , Veneti , Camunni and Histri in the North , the Etruscans , Latins , Falisci , Picentes and Umbri tribes (such as the Sabines ) in the Centre , and the Iapygian tribes (such as the Messapians ), the Oscan tribes (such as the Samnites ), and Greek colonies in the South . The consolidation of Italy into a single entity occurred during
6350-488: The court, could only refer to the Christians of the empire. At the behest of his court, Diocletian acceded to demands for universal persecution. On 23 February 303, Diocletian ordered that the newly built church at Nicomedia be razed. He demanded that its scriptures be burned, and seized its precious stores for the treasury. The next day, Diocletian's first "Edict against the Christians" was published. The edict ordered
6477-641: The current region of Calabria ); later the term was extended by Romans to include the Italian Peninsula up to the Rubicon , a river located between Northern and Central Italy . In 49 BC, with the Lex Roscia , Julius Caesar gave Roman citizenship to the people of the Cisalpine Gaul ; while in 42 BC the hitherto existing province was abolished, thus extending Italy to the north up to
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#17327663081306604-499: The decline of the city of Rome (which was sacked in 410 for the first time in almost eight centuries). The name Italia covered an area whose borders evolved over time. According to Strabo 's Geographica , before the expansion of the Roman Republic , the name was used by Greeks to indicate the land between the strait of Messina and the line connecting the gulf of Salerno and gulf of Taranto (corresponding roughly to
6731-399: The destruction of Christian scriptures and places of worship across the empire, and prohibited Christians from assembling for worship. Before the end of February, a fire destroyed part of the Imperial palace. Galerius convinced Diocletian that the culprits were Christians, conspirators who had plotted with the eunuchs of the palace. An investigation was commissioned, but no responsible party
6858-485: The emperors were not "gods" in the tradition of the Imperial cult – although they may have been hailed as such in Imperial panegyrics . Instead, they were seen as the gods' representatives, effecting their will on earth. The shift from military acclamation to divine sanctification took the power to appoint emperors away from the army. Religious legitimization elevated Diocletian and Maximian above potential rivals in
6985-526: The empire to remain essentially intact for another 150 years despite being near the brink of collapse in Diocletian's youth. Weakened by illness, Diocletian left the imperial office on 1 May 305, becoming the first Roman emperor to abdicate the position voluntarily. He lived out his retirement in his palace on the Dalmatian coast , tending to his vegetable gardens. His palace eventually became the core of
7112-450: The empire's frontiers than the traditional capital at Rome. Building on third-century trends towards absolutism , he styled himself an autocrat, elevating himself above the empire's masses with imposing forms of court ceremonies and architecture. Bureaucratic and military growth, constant campaigning, and construction projects increased the state's expenditures and necessitated a comprehensive tax reform. From at least 297 on, imperial taxation
7239-412: The empire's last, largest, and bloodiest official persecution of Christianity , failed to eliminate Christianity in the empire. After 324, Christianity became the empire's preferred religion under Constantine . Despite these failures and challenges, Diocletian's reforms fundamentally changed the structure of the Roman imperial government and helped stabilize the empire economically and militarily, enabling
7366-495: The empire's traditional enemy, and in 299, he sacked their capital, Ctesiphon . Diocletian led the subsequent negotiations and achieved a lasting and favorable peace. Diocletian separated and enlarged the empire's civil and military services and reorganized the empire's provincial divisions, establishing the largest and most bureaucratic government in the history of the empire. He established new administrative centers in Nicomedia , Mediolanum , Sirmium , and Trevorum , closer to
7493-469: The empire. Diocletian refused and fought a battle with them, but was unable to secure a complete victory. The nomadic pressures of the European Plain remained and could not be solved by a single war; soon the Sarmatians would have to be fought again. Diocletian wintered in Nicomedia . There may have been a revolt in the eastern provinces at this time, as he brought settlers from Asia to populate emptied farmlands in Thrace . He visited Syria Palaestina
7620-416: The end of the Social War in 87 BC, Rome had allowed its fellow Italian allies full rights in Roman society and granted Roman citizenship to all fellow Italic peoples . After having been for centuries the heart of the Roman Empire , from the 3rd century the government and the cultural center began to move eastward: first the Edict of Caracalla in 212 AD, extended Roman citizenship to all free men within
7747-415: The end of the fourth century by eight consulares ( Venetiae et Histriae , Aemiliae , Liguriae , Flaminiae et Piceni annonarii , Tusciae et Umbriae , Piceni suburbicarii , Campaniae , and Siciliae ), two correctores ( Apuliae et Calabriae and Lucaniae et Bruttiorum ) and seven praesides ( Alpium Cottiarum , Rhaetia Prima and Secunda , Samnii , Valeriae , Sardiniae , and Corsicae ). In
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#17327663081307874-400: The entire crowd turned to face Constantine. It was not to be: Severus II and Maximinus II were declared caesars. Maximinus appeared and took Diocletian's robes. On the same day, Severus received his robes from Maximian in Milan. Constantius succeeded Maximian as Augustus of the West, but Constantine and Maxentius were entirely ignored in the transition of power. This did not bode well for
8001-420: The few instances during the Late Empire in which an emperor admitted a privatus as his colleague) and by creating senior senators Vettius Aquilinus and Junius Maximus ordinary consuls for the following year – for Maximus, it was his second consulship. If Diocletian did enter Rome shortly after his accession, he did not stay long; he is attested back in the Balkans by 2 November 285, on campaign against
8128-403: The fifth century, with the Emperors controlled by their barbarian generals, the Western Imperial government maintained weak control over Italy itself, whose coasts were periodically under attack. In 476, with the abdication of Romulus Augustulus , the Western Roman Empire had formally fallen unless one considers Julius Nepos , the legitimate emperor recognized by Constantinople as the last. He
8255-405: The first. Galerius left the city for Rome, declaring Nicomedia unsafe. Diocletian would soon follow. Although further persecutory edicts followed, compelling the arrest of the Christian clergy and universal acts of sacrifice, they were ultimately unsuccessful; most Christians escaped punishment, and pagans too were generally unsympathetic to the persecution. The martyrs ' sufferings strengthened
8382-401: The five satrapies between the Tigris and Armenia: Ingilene , Sophanene ( Sophene ), Arzanene ( Aghdznik ), Corduene (Carduene), and Zabdicene (near modern Hakkâri , Turkey). These regions included the passage of the Tigris through the Anti-Taurus range; the Bitlis pass, the quickest southerly route into Persian Armenia; and access to the Tur Abdin plateau. A stretch of land containing
8509-413: The following spring, His stay in the East saw diplomatic success in the conflict with Persia: in 287, Bahram II granted him precious gifts, declared open friendship with the Empire, and invited Diocletian to visit him. Roman sources insist that the act was entirely voluntary. Around the same time, perhaps in 287, Persia relinquished claims on Armenia and recognized Roman authority over territory to
8636-518: The following winter and spring. He campaigned successfully against the Sarmatians in 294, probably in the autumn. The Sarmatians' defeat kept them from the Danube provinces for a long time. Meanwhile, Diocletian built forts north of the Danube, part of a new defensive line called the Ripa Samartica , at Aquincum ( Budapest , Hungary ), Bononia ( Vidin , Bulgaria), Ulcisia Vetera, Castra Florentium, Intercisa ( Dunaújváros , Hungary), and Onagrinum ( Begeč , Serbia). In 295 and 296 Diocletian campaigned in
8763-511: The frequency of their incursions. No details survive for these events. Some of the princes of these states were Persian client kings, a disturbing fact for the Romans in light of increasing tensions with the Sassanids. In the West, Maximian lost the fleet built in 288 and 289, probably in the early spring of 290. The panegyrist who refers to the loss suggests that its cause was a storm, but this might have been an attempt to conceal an embarrassing military defeat. Diocletian broke off his tour of
8890-439: The future security of the tetrarchic system. Diocletian retired to his homeland, Dalmatia . He moved into the expansive Diocletian's Palace , a heavily fortified compound located by the small town of Spalatum on the shores of the Adriatic Sea , and near the large provincial administrative center of Salona . The palace is preserved in great part to this day and forms the historic core of Split , modern-day Croatia , where it
9017-421: The future. The haruspices were unable to read the entrails of the sacrificed animals and blamed Christians in the Imperial household. The emperors ordered all members of the court to perform a sacrifice to purify the palace. The emperors sent letters to the military command, demanding the entire army perform the required sacrifices or face discharge. Diocletian was conservative in matters of religion, faithful to
9144-452: The hands of Maxentius. He ordered Maximian, who had attempted to return to power after his retirement, to step down permanently. At Carnuntum people begged Diocletian to return to the throne, to resolve the conflicts that had arisen through Constantine's rise to power and Maxentius's usurpation. Diocletian's reply: "If you could show the cabbage that I planted with my own hands to your emperor, he definitely wouldn't dare suggest that I replace
9271-524: The household guard, had already defected to Diocletian in the early spring. When the Battle of the Margus began, Carinus' prefect Aristobulus also defected. In the course of the battle, Carinus was killed by his own men. Following Diocletian's victory, both the western and the eastern armies acclaimed him as Emperor. Diocletian exacted an oath of allegiance from the defeated army and departed for Italy. Diocletian may have become involved in battles against
9398-499: The lands delivered to Tiridates in the peace of 287. He moved south into Roman Mesopotamia in 297, where he inflicted a severe defeat on Galerius in the region between Carrhae ( Harran , Turkey) and Callinicum ( Raqqa , Syria), suggested by the historian Fergus Millar to have been somewhere on the Balikh River . Diocletian may or may not have been present at the battle, but he quickly divested himself of all responsibility. In
9525-465: The later strategic strongholds of Amida ( Diyarbakır , Turkey) and Bezabde came under firm Roman military occupation. With these territories, Rome would have an advance station north of Ctesiphon, and would be able to slow any future advance of Persian forces through the region. Many cities east of the Tigris came under Roman control, including Tigranokert , Saird , Martyropolis , Balalesa , Moxos , Daudia , and Arzan – though under what status
9652-471: The legitimate Emperor in the West. Numerian lingered in the East. The Roman withdrawal from Persia was orderly and unopposed. The Sassanid king Bahram II could not field an army against them as he was still struggling to establish his authority. By March 284, Numerian had only reached Emesa (Homs) in Syria ; by November, only Asia Minor. In Emesa he was apparently still alive and in good health: he issued
9779-447: The light of the sun and swore an oath disclaiming responsibility for Numerian's death. He asserted that Aper had killed Numerian and concealed it. In full view of the army, Diocles drew his sword and killed Aper. Soon after Aper's death, Diocles changed his name to the more Latinate "Diocletianus" – in full, Gaius Valerius Diocletianus. After his accession, Diocletian and Lucius Caesonius Bassus were named as consuls and assumed
9906-542: The long-standing collaboration between the empire's senatorial and military aristocracies. It also tied his success to that of the Senate, whose support he would need in his advance on Rome. Diocletian was not the only challenger to Carinus' rule; the usurper Julianus , Carinus' corrector Venetiae , took control of northern Italy and Pannonia after Diocletian's accession. Julianus minted coins from Siscia ( Sisak , Croatia) declaring himself emperor and promising freedom. This aided Diocletian in his portrayal of Carinus as
10033-563: The lowest rank as clarissimi . As a result, Italy began to decline in favour of the provinces, which resulted in the division of the Empire into two administrative units in 395: the Western Roman Empire , with its capital at Mediolanum (now Milan ), and the Eastern Roman Empire , with its capital at Constantinople (now Istanbul ). In 402, the Imperial residence was moved to Ravenna from Milan, confirming
10160-567: The man he had put in charge of operations against Saxon and Frankish pirates on the Saxon Shore , had, according to literary sources, begun keeping the goods seized from the pirates for himself. Maximian issued a death warrant for his larcenous subordinate. Carausius fled the Continent, proclaimed himself emperor, and agitated Britain and northwestern Gaul into open revolt against Maximian and Diocletian. Far more probable, according to
10287-499: The military structures. The new city, however, did not receive an urban prefect until 359 which raised it to the status of eastern capital. After the death of Theodosius in 395 and the subsequent division of the Empire, Italy was home base of the Western Roman Empire . As a result of Alaric's invasion in 402 the western seat was moved from Mediolanum to Ravenna . Alaric , king of Visigoths , sacked Rome itself in 410; something that had not happened for eight centuries. Northern Italy
10414-576: The modern-day city of Split in Croatia. Diocletian was born in Dalmatia , probably at or near the town of Salona (modern Solin , Croatia ), to which he retired later in life. His original name was Diocles (in full, Gaius Valerius Diocles), possibly derived from Dioclea, the name of both his mother and her supposed place of birth . Diocletian's official birthday was 22 December, and his year of birth has been estimated at between 242 and 245 based on
10541-642: The name Diocletianus. The title was also claimed by Carus's surviving son, Carinus , but Diocletian defeated him in the Battle of the Margus . Diocletian's reign stabilized the empire and ended the Crisis of the Third Century . He appointed fellow officer Maximian as Augustus , co-emperor, in 286. Diocletian reigned in the Eastern Empire , and Maximian reigned in the Western Empire . Diocletian delegated further on 1 March 293, appointing Galerius and Constantius as junior colleagues (each with
10668-547: The news in Nicomedia ( İzmit ) in November. Numerian's generals and tribunes called a council for the succession, and chose Diocles as Emperor, in spite of Aper's attempts to garner support. On 20 November 284, the army of the east gathered on a hill 5 kilometres (3.1 mi) outside Nicomedia. The army unanimously saluted Diocles as their new Augustus , and he accepted the purple imperial vestments. He raised his sword to
10795-536: The number of Roman citizens throughout the empire. The surviving totals were 4,063,000 in 28 BC, 4,233,000 in 8 BC, and 4,937,000 in AD 14, but it is still debated whether these counted all citizens, all adult male citizens, or citizens sui iuris . Estimates for the population of mainland Italy, including Cisalpine Gaul, at the beginning of the 1st century range from 6,000,000 according to Karl Julius Beloch in 1886, to 14,000,000 according to Elio Lo Cascio in 2009. During
10922-426: The offensive in 298 with an attack on northern Mesopotamia via Armenia. It is unclear if Diocletian was present to assist the campaign; he might have returned to Egypt or Syria. Narseh retreated to Armenia to fight Galerius's force, putting himself at a disadvantage; the rugged Armenian terrain was favorable to Roman infantry, but not to Sassanid cavalry. In two battles, Galerius won major victories over Narseh. During
11049-402: The office of caesar. The same day, in either Philippopolis ( Plovdiv , Bulgaria ) or Sirmium, Diocletian did the same for Galerius , husband to Diocletian's daughter Valeria, and perhaps Diocletian's praetorian prefect. Constantius was assigned Gaul and Britain. Galerius was initially assigned Syria, Palestine, Egypt, and responsibility for the eastern borderlands. This arrangement is called
11176-403: The only adult sons of reigning emperors, who had long been preparing to succeed their fathers, would be granted the title of Caesar . Constantine had travelled through Palestine at the right hand of Diocletian, and was present at the palace in Nicomedia in 303 and 305. It is likely that Maxentius received the same treatment. In Lactantius's account, when Diocletian announced that he was to resign,
11303-555: The only extant rescript in his name there, but after he left the city, his staff, including the prefect (Numerian's father-in-law and the dominant influence in his entourage) Aper , reported that he suffered from an inflammation of the eyes. He traveled in a closed coach from then on. When the army reached Bithynia , some of the soldiers smelled an odor emanating from the coach. They opened its curtains and found Numerian dead. Both Eutropius and Aurelius Victor describe Numerian's death as an assassination. Aper officially broke
11430-555: The panegyric detailing the ceremony implied that the true center of the empire was not Rome, but where the emperor sat ("...the capital of the empire appeared to be there, where the two emperors met"), it simply echoed what had already been stated by the historian Herodian in the early third century: "Rome is where the emperor is". During the meeting, decisions on matters of politics and war were probably made in secret. The Augusti would not meet again until 303. Some time after his return, and before 293, Diocletian transferred command of
11557-631: The part of an aristocratic ruler, not a monarchic one. On 20 December 303, Diocletian cut short his stay in Rome and left for the north. He did not even perform the ceremonies investing him with his ninth consulate; he did them in Ravenna on 1 January 304 instead. There are suggestions in the Panegyrici Latini and Lactantius's account that Diocletian arranged plans for his and Maximian's future retirement of power in Rome. Maximian, according to these accounts, swore to uphold Diocletian's plan in
11684-606: The peace and happiness of this place with the storms of a never-satisfied greed." Diocletian lived for four more years, spending his days in his palace gardens. He saw his tetrarchic system fail, torn apart by the civil wars of his successors . He heard of Maximian's third claim to the throne, his forced suicide, and his damnatio memoriae . In his own palace, statues and portraits of his former companion emperor were torn down and destroyed. After an illness, Diocletian died on 3 December 311, with some proposing that he took his own life in despair. Diocletian saw his work as that of
11811-418: The prehistoric era are approximate. For further background, see history of Italy and list of prime ministers of Italy . Lucius Sicinius Vellutus , the plebs abandoned Rome for the nearby Monte Sacro . Marius was elected consul for the first of three years in a row. Civil wars would follow with the first breaking out in 238, another in 249 followed by a third in 253. From 235 through 284
11938-419: The proconsulate of Africa and the post of urban prefect for 295. The other figures who retained their offices might have also betrayed Carinus. The assassinations of Aurelian and Probus demonstrated that sole rulership was dangerous to the stability of the empire. Conflict boiled in every province, from Gaul to Syria, Egypt to the lower Danube. It was too much for one person to control, and Diocletian needed
12065-448: The region again, and won a victory over the Carpi in the summer of 296. Later during both 299 and 302, as Diocletian was residing in the East, it was Galerius's turn to campaign victoriously on the Danube. By the end of his reign, Diocletian had secured the entire length of the Danube, provided it with forts, bridgeheads, highways, and walled towns, and sent fifteen or more legions to patrol the region; an inscription at Sexaginta Prista on
12192-400: The resolve of their fellow Christians. Constantius and Maximian did not apply the later edicts, and left the Christians of the West unharmed. Galerius rescinded the edict in 311, announcing that the persecution had failed to bring Christians back to traditional religion. The temporary apostasy of some Christians, and the surrendering of scriptures, during the persecution played a major role in
12319-415: The resurgent Sarmatians. No details survive, but surviving inscriptions indicate that Diocletian took the title Sarmaticus Maximus after 289. In the East, Diocletian engaged in diplomacy with desert tribes in the regions between Rome and Persia. He might have been attempting to persuade them to ally themselves with Rome, thus reviving the old, Rome-friendly, Palmyrene sphere of influence , or to reduce
12446-520: The rogue commander, so in 287 he campaigned against tribes beyond the Rhine instead. As Carausius was allied to the Franks, Maximian's campaigns could be seen as an effort to deny him a basis of support on the mainland. The following spring, as Maximian prepared a fleet for an expedition against Carausius, Diocletian returned from the East to meet Maximian. The two emperors agreed on a joint campaign against
12573-420: The same to Maximian at Sirmium. Scholars doubt Lactantius' account, since he had a strong bias against Galerius and probably attempted to villainize him. On 1 May 305, Diocletian called an assembly of his generals, traditional companion troops, and representatives from distant legions. They met at the same hill, 5 kilometres (3.1 mi) out of Nicomedia, where Diocletian had been proclaimed emperor. In front of
12700-488: The site has been located between the Mons Aureus (Seone, west of Smederevo ) and Viminacium , near modern Belgrade , Serbia. Despite having a stronger, more powerful army, Carinus held the weaker position. His rule was unpopular, and it was later alleged that he had mistreated the Senate and seduced his officers' wives. It is possible that Flavius Constantius , the governor of Dalmatia and Diocletian's associate in
12827-598: The size of the Roman provinces by doubling their number to reduce the power of the provincial governors. He grouped the provinces into several dioceses (Latin: diocesis) and put them under the supervision of the Imperial vicarius (vice, deputy), who was the head of the diocese. During the Crisis of the Third Century the importance of Rome declined because the city was far from the troubled frontiers. Diocletian and his colleagues usually resided in four Imperial seats. The Augusti, Diocletian and Maximian , who were responsible for
12954-434: The south Naples and the toe and heel of the peninsula. 42°00′00″N 12°30′00″E / 42.0000°N 12.5000°E / 42.0000; 12.5000 Timeline of Italian history Timeline This is a timeline of Italian history , comprising important legal and territorial changes and political events in Italy and its predecessor states, including Ancient Rome and Prehistoric Italy . Date of
13081-535: The southern border, where the empire bordered the Arabs, in the year 300. This road would remain in use for centuries but proved ineffective in defending the border as conventional armies could not operate in the region. At the conclusion of the Peace of Nisibis , Diocletian and Galerius returned to Antioch . At some time in 299, the emperors took part in a ceremony of sacrifice and divination in an attempt to predict
13208-639: The southern foot of the Alps . Under Augustus, the peoples of today's Aosta Valley and of the western and northern Alps were subjugated (so the western border of Roman Italy was moved to the Varus river ), and the Italian eastern border was brought to the Arsia in Istria . Lastly, in the late 3rd century, Italy came to also include the islands of Sicily , Corsica and Sardinia , as well as Raetia and part of Pannonia . The city of Emona (modern Ljubljana , Slovenia)
13335-485: The spring of 299. The magister memoriae (secretary) of Diocletian and Galerius, Sicorius Probus, was sent to Narseh to present terms. The conditions of the resulting Peace of Nisibis were heavy: Armenia 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
13462-523: The subsequent Donatist controversy. Within twenty-five years of the persecution's inauguration, the Christian emperor Constantine would rule the empire alone. He would reverse the consequences of the edicts, and return all confiscated property to Christians. Under Constantine's rule, Christianity would become the empire's preferred religion. Diocletian was demonized by his Christian successors: Lactantius intimated that Diocletian's ascendancy heralded
13589-593: The three Augusti"; on the other side, it showed Carausius together with Diocletian and Maximian, with the caption CARAVSIVS ET FRATRES SVI, "Carausius & his brothers". However, Diocletian could not allow a breakaway regional usurper following in Postumus 's footprints to enter, of his own accord, the imperial college. Spurred by the crisis, on 1 April 286, Maximian took up the title of Augustus (emperor). Unusually, Diocletian could not have been present to witness it. It has even been suggested that Maximian usurped
13716-531: The title Caesar ), under himself and Maximian respectively. Under the Tetrarchy , or "rule of four", each tetrarch would rule over a quarter-division of the empire. Diocletian secured the empire's borders and purged it of all threats to his power. He defeated the Sarmatians and Carpi during several campaigns between 285 and 299, the Alamanni in 288, and usurpers in Egypt between 297 and 298. Galerius, aided by Diocletian, campaigned successfully against Persia ,
13843-467: The title and was only later recognized by Diocletian in hopes of avoiding civil war. This suggestion is unpopular, as it is clear that Diocletian meant for Maximian to act with a certain amount of independence. It may be posited that Diocletian felt the need to bind Maximian closer to him, by making him his empowered associate, to avoid the possibility of him striking some sort of deal with Carausius. Maximian realized that he could not immediately suppress
13970-415: The traditional Roman pantheon and understanding of demands for religious purification, but Eusebius , Lactantius and Constantine state that it was Galerius , not Diocletian, who was the prime supporter of the purge. Galerius, even more devoted and passionate than Diocletian, saw political advantage in the persecution. He was willing to break with a government policy of inaction on the issue. Antioch
14097-768: The two tribes received an annual gold stipend. Diocletian left Africa quickly after the treaty, moving from Upper Egypt in September 298 to Syria in February 299. He met with Galerius in Mesopotamia. In 294, Narseh , a son of Shapur who had been passed over for the Sassanid succession, came to power in Persia. In early 294, Narseh sent Diocletian the customary package of gifts between the empires, and Diocletian responded with an exchange of ambassadors. Within Persia, Narseh
14224-404: The war against Carausius from Maximian to Flavius Constantius , who concluded it successfully in 296. Constantius was a former governor of Dalmatia and a man of military experience stretching back to Aurelian 's campaigns against Zenobia (272–73). He was Maximian's praetorian prefect in Gaul, and the husband to Maximian's daughter, Theodora . On 1 March 293 at Milan, Maximian gave Constantius
14351-576: The west and south of the Tigris. The western portion of Armenia was incorporated into the empire and made a province. Tiridates III , the Arsacid claimant to the Armenian throne and a Roman client, had been disinherited and forced to take refuge in the empire after the Persian conquest of 252–53. In 287, he returned to lay claim to the eastern half of his ancestral domain and encountered no opposition. Bahram II's gifts were widely recognized as symbolic of
14478-600: Was Dux Moesiae , a commander of forces on the lower Danube . The often-unreliable Historia Augusta states that he served in Gaul , but this is not corroborated by other sources and is ignored by modern historians. The first time Diocletian's whereabouts are accurately established was in 282 when the Emperor Carus made him commander of the Protectores domestici , the elite cavalry force directly attached to
14605-468: Was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia . Diocles rose through the ranks of the military early in his career, eventually becoming a cavalry commander for the army of Emperor Carus . After the deaths of Carus and his son Numerian on a campaign in Persia , Diocles was proclaimed emperor by the troops, taking
14732-535: Was Diocletian's primary residence from 299 to 302, while Galerius swapped places with his Augustus on the Middle and Lower Danube. Diocletian visited Egypt once, over the winter of 301–2, and issued a grain dole in Alexandria. Following some public disputes with Manicheans , Diocletian ordered that the leading followers of Mani be burnt alive along with their scriptures. In a 31 March 302 rescript from Alexandria, he declared that low-status Manicheans must be executed by
14859-674: Was assassinated in 480 and may have been recognized by Odoacer. Italy remained under Odoacer and his Kingdom of Italy , and then under the Ostrogothic Kingdom . The Germanic successor states under Odoacer and Theodoric the Great continued to use the Roman administrative apparatus, as well as being nominal subjects of the Eastern emperor at Constantinople . In 535 Roman Emperor Justinian invaded Italy which suffered twenty years of disastrous war. In August 554, Justinian issued
14986-599: Was attacked by Attila 's Huns in 452. Rome was sacked in 455 again by the Vandals under the command of Genseric . According to Notitia Dignitatum , one of the very few surviving documents of Roman government updated to the 420s, Roman Italy was governed by a praetorian prefect , Prefectus praetorio Italiae (who also governed the Diocese of Africa and the Diocese of Pannonia ), one vicarius , and one comes rei militaris . The regions of Italy were governed at
15113-654: Was designated a World Heritage Site by UNESCO in 1979. Maximian retired to villas in Campania or Lucania . Their homes were distant from political life, but Diocletian and Maximian were close enough to remain in regular contact with each other. Galerius assumed the consular fasces in 308 with Diocletian as his colleague. In the autumn of 308, Galerius again conferred with Diocletian at Carnuntum ( Petronell-Carnuntum , Austria ). Diocletian and Maximian were both present on 11 November 308, to see Galerius appoint Licinius to be Augustus in place of Severus, who had died at
15240-483: Was destroying every trace of his immediate predecessors from public monuments. He sought to identify himself with the warlike kings Ardashir I (r. 226–241) and Shapur I (r. 241–272), who had defeated and imprisoned Emperor Valerian (r. 253–260) following his failed invasion of the Sasanian Empire . Narseh declared war on Rome in 295 or 296. He appears to have first invaded western Armenia, where he seized
15367-446: Was found. Executions followed anyway, and the palace eunuchs Dorotheus and Gorgonius were executed. One individual, Peter Cubicularius , was stripped, raised high, and scourged. Salt and vinegar were poured in his wounds, and he was slowly boiled over an open flame. The executions continued until at least 24 April 303, when six individuals, including the bishop Anthimus , were decapitated . A second fire occurred sixteen days after
15494-619: Was in a less comfortable position than most of his predecessors, as he had a daughter, Valeria, but no sons. His co-ruler had to be from outside his family, raising the question of trust. Some historians state that Diocletian adopted Maximian as his filius Augusti , his "Augustan son", upon his appointment to the throne, following the precedent of some previous Emperors. This argument has not been universally accepted. Diocletian and Maximian added each other's nomina (their family name , "Valerius" and "Aurelius", respectively) to their own, thus creating an artificial family link and becoming part of
15621-469: Was perverted and minimized in the service of the theme of the tetrarchs as "restorers". Aurelian's achievements were ignored, the revolt of Carausius was backdated to the reign of Gallienus, and it was implied that the tetrarchs engineered Aurelian's defeat of the Palmyrenes ; the period between Gallienus and Diocletian was effectively erased. The history of the empire before the tetrarchy was portrayed as
15748-409: Was privileged by Augustus and his heirs, with the construction, among other public structures, of a dense network of Roman roads . The Italian economy flourished: agriculture, handicraft and industry had noticeable growth, allowing the export of goods to the provinces. The Italian population may have grown as well: three censuses were ordered by Augustus, in his role as Roman censor , in order to record
15875-513: Was standardized, made more equitable, and levied at generally higher rates. Not all of Diocletian's plans were successful: the Edict on Maximum Prices (301), his attempt to curb inflation via price controls , was counterproductive and quickly ignored. Although effective while he ruled, Diocletian's tetrarchic system collapsed after his abdication under the competing dynastic claims of Maxentius and Constantine, sons of Maximian and Constantius respectively. The Diocletianic Persecution (303–312),
16002-516: Was still alive. When Diocletian reappeared in public on 1 March 305, he was emaciated and barely recognizable. Galerius arrived in the city later in March. According to Lactantius , he came armed with plans to reconstitute the Tetrarchy, force Diocletian to step down, and fill the Imperial office with men compliant to his will. Through coercion and threats, he eventually convinced Diocletian to comply with his plan. Lactantius also claims that he had done
16129-542: Was the easternmost town of Italy. At the beginning of the Roman Imperial era, Italy was a collection of territories with different political statuses. Some cities, called municipia , had some independence from Rome, while others, the coloniae , were founded by the Romans themselves. Around 7 BC, Augustus divided Italy into eleven regiones , as reported by Pliny the Elder in his Naturalis Historia : Italy
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