Final answer:
Christianity differed from the Greco-Roman world in terms of emphasis on belief and personal relationship with God, disapproval of animal sacrifice and worship of the emperor, and becoming the official religion of the Roman Empire.
Step-by-step explanation:
Christianity differed from the Greco-Roman world in several ways. First, Christianity emphasized belief and a personal relationship with God, while the Greco-Roman religions focused more on rituals and cults.
The doctrines of Christianity were determined in councils, leading to a common statement of belief called the Nicene Creed.
Second, Christians disapproved of animal sacrifice and worship of the emperor, instead focusing on prayer and meetings in house churches.
They also participated in communal feasting and practiced baptism. Lastly, Christianity eventually became the official religion of the Roman Empire, leading to the repression of other religions.