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Council Nicaea

Battle of the Milvian Bridge between the Roman Emperors Constantine I and Maxentius on 28 October 312 AD by Giulio Romano ( 1520-24). Vatican City (Public Domain)

The Constantinian Dynasty - Five Successors, One Victorious Emperor

The Tetrarchy, inaugurated in 285 AD by Emperor Diocletian, had been instituted mainly with the intent of mitigating successions tribulations such as those that had plagued the third century. But the...