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Period: 235 to 285
Third Century- Age of Chaos
It was a period in Roman history during which the Roman Empire had nearly collapsed under the combined pressure of repeated foreign invasions, civil wars and economic disintegration. At the height of the crisis, the Roman state had split into three distinct and competing polities. -
Period: 284 to 305
Diocletian
He was a Roman emperor who restored efficient government to the empire after the near anarchy of the 3rd century. His reorganization of the fiscal, administrative, and military machinery of the empire laid the foundation for the Byzantine Empire in the East and temporarily shored up the decaying empire in the West. -
286
Empire Divided
Diocletian Divided the Roman Empire into East and West during his reforms in an attempt to improve the administration of the empire and to improve governance and stability. -
Period: 305 to 337
Constantine
He was the first Roman emperor to profess Christianity. He not only initiated the evolution of the empire into a Christian state but also provided the impulse for a distinctively Christian culture that prepared the way for the growth of Byzantine and Western medieval culture. -
378
The Battle of Adrianople
The Battle of Adrianople also known as Battle of Hadrianopolis was fought between the Eastern Roman army led by the Roman emperor Valens and Gothic rebels led by Fritigern. The battle took place in the vicinity of Adrianople, in the Roman province of Thracia. -
380
Christianity become the official religion of Rome
In the year before the Council of Constantinople in 381, the Trinitarian version of Christianity became the official religion of the Roman Empire when Emperor Theodosius I issued the Edict of Thessalonica in 380, which recognized the catholic orthodoxy of Nicene Christians as the Roman Empire's state religion. -
395
Huns Attack
The Huns began their first large-scale attacks on the Romans. In the summer of that year, the Huns crossed over the Caucasus Mountains, while in the winter of 395, another Hunnic invasion force crossed the frozen Danube, pillaged Thrace, and threatened Dalmatia. -
410
Germanic tribes push at the borders
German tribes outside the frontiers began to round up their cattle, mobilize their fighting men, and move toward the Roman borders. Marching southwestward under their leader Alaric, the Visigoths reached Rome in 410 A.D. and looted the city. -
439
Vandals in North Africa
The Vandals, a nomadic Germanic tribe, established a powerful kingdom in North Africa. Despite their infamous reputation due to the sack of Rome in 455 CE, which gave rise to the term “vandalism,” they were more than mere looters and destroyers. After wresting control of North Africa from the Western Roman Empire, the Vandals created a prosperous state. -
455
Vandals Sack Rome
The Vandals sacked the city for two weeks before returning to Africa, during which the imperial government of the Western Roman Empire was effectively paralyzed . They marched south through Campania, devastating the region, and attempted to sack Neapolis but failed as the city had better defenses.