What religions are in Ancient Rome?
By the Common Era, some Roman citizens were beginning to accept Judaism, Christianity or Mithraism, as well as the mystery religions. By the fourth century CE, paganism was still overwhelmingly the most popular religion, but was no longer synonymous with Roman belief. Christianity and Mithraism had each converted a significant minority of the population to their faith. Then, the decision of Emperor Constantine, to give Christianity state patronage, resulted in the eclipse of other religions in ancient Rome.
