The Roman Empire

Edict of Milan (313 CE) and the foundation of Constantinople: After winning the civil war, Constantine issued the Edict of Milan (i.e. formal rule, 313 CE), ending the state-sanctioned persecution of Christians.

Arianism and the various views about Jesus’s divinity and his relationship to God: Arianism was propagated by Arius (the early 4th century), a minister of the Christian Church from Alexandria. He rejected trinity and taught that Jesus was a “created being by God” and not co-eternal or co-equal with Him.