How Christianity Defeated the Roman Empire

In 306, Constantine was declared Augustus amidst the tetrarchy system of the Roman Empire. Following a civil war, he expanded his territory, ultimately confronting Maxentius in Rome. On October 27, 312, he reportedly had a vision of Christ, leading him to convert and instruct his soldiers to fight under the Christian symbol. The next day, he defeated Maxentius, who drowned in the Tiber. Despite the earlier persecutions, Christianity was gaining traction in the empire, especially among soldiers. Constantine became a staunch supporter of the faith, issuing an edict of tolerance in 313 and later representing himself as a defender of Christianity during conflicts, enhancing his popularity.