What Happened to the Roman Empire After Constantine's Death
See full answer below. The split between the East and the West continued to grow with the Eastern Roman empire evolving into what historians call the Byzantine Empire. Decline And Strains On The Roman Empire After Constantine Facts And Details Constantine defeated his main rival for the Western emperorship in 312 and defeated the Eastern emperor in 324 after years of strained relations thus making Constantine sole ruler of the Roman Empire. . It went on to become the. Constantines Christian sons and successors. Christianity continued to grow after Constantines death and became the official religion of the Roman Empire in 380 AD. Civil war over the control of the western part of the empire between Constantine II and Constans during which Constantine II diedCostans was later killed by supporters of Magnentius a usurper. Hendikeps2 and 3 more users found this answer helpful. He would direct largely successful campaigns for th...