Constantine legalized Christianity, moving it from a persecuted cult to the favored religion of the state.
By the time of Constantine’s death in 337 AD, the Roman Empire was unrecognizable from the one Severus had inherited. The Mediterranean world had shifted from a pagan, Rome-centered principate to a Christian, East-leaning autocracy. This "Late Antiquity" set the stage for the Byzantine Empire in the East and the eventual rise of medieval Europe in the West. The Roman Empire from Severus to Constantine
The collapse was halted by , a pragmatic reformer who realized the empire was too large for one man to rule. He established the Tetrarchy (Rule of Four), dividing the empire into Eastern and Western halves, each governed by an "Augustus" and a junior "Caesar." This "Late Antiquity" set the stage for the
He took an active role in church doctrine, seeking to unify the faith. The Cyprian Plague decimated the workforce and the army
The Cyprian Plague decimated the workforce and the army.