Question

christianity became the official religion of the roman empire under the reign of a. justinian. b. the bishop of rome. c. augustus caesar. d. constantine.

Answer 1

Constantine

Step-by-step explanation:

this is 100% correct

Answer 2

Christianity became the official religion of the Roman Empire under the reign of D) Constantine.
Before his battle, he saw a symbol of a cross in the sky, which was a sign to him that he was the one who would bring Christianity to the world.