1 jan 286 ano - Diocletian Creates the Tretrarchy

Descrição:

Diocletian divided the Roman Empire when, in 286, he elevated Maximian to the rank of Augustus (emperor) and gave him control of the Western Empire, while he continued to rule the East.[29][30][31] In 293, Galerius and Constantius Chlorus were appointed as their subordinate (caesars), as a way to avoid the civil unrest that had marked the 3rd century. This system effectively divided the Empire into four major regions, the First Tetrarchy: in the West, Maximian made Mediolanum (now Milan) his capital, and Constantius made Trier his. In the East, Galerius made his capital Sirmium and Diocletian made Nicomedia his. On 1 May 305, Diocletian and Maximian abdicated, replaced by Galerius and Constantius, who, in turn, appointed Maximinus II and Valerius Severus, respectively, as their caesars, thus creating the Second Tetrarchy.[32]

The Tetrarchy collapsed after the unexpected death of Constantius in 306. His son, Constantine, was declared Western emperor by the British legions,[33][34][35][36] but several other claimants arose and attempted to seize the Western Empire. In 308, Galerius revived the Tetrarchy by dividing the Western Empire between Constantine and Licinius.[37] However, Constantine was more interested in conquering the whole empire so, by 314, began to compete against Licinius, finally defeating him in 324 at the Battle of Chrysopolis.[38] After Constantine unified the empire, he refounded the city of Byzantium in modern-day Turkey as Nova Roma ("New Rome"), later called Constantinople, and made it the capital of the Roman Empire.[39] Although the Tetrarchy was ended, the concept of physically dividing the Roman Empire into East and a West continued, as happened after the deaths of Constantine and Theodosius I.[40][41]

Adicionado na linha do tempo:

Data: