Final answer:
Constantine attributed his victory as emperor in 312 to the Christian God, marking a turning point for Christianity within the Roman Empire.
Step-by-step explanation:
When Constantine became emperor of the Western Roman Empire in 312, he attributed his victory to the Christian God.
Constantine's pivotal conversion to Christianity prior to his victory at the Battle of the Milvian Bridge in 312 AD significantly altered the religious landscape of the Roman Empire. Following his conversion, Constantine became the principal patron of Christianity, notably issuing the Edict of Milan in 313, which granted religious toleration.
Although Christianity would not be the official religion of Rome until the end of the fourth century, Constantine's sponsorship of the faith facilitated its rise to prominence, effectively transforming the empire into a Christian state.