Explain how a fringe Jewish sect that was illegal and persecuted became the official religion of the Empire.

Middle Ages

Christianity’s success in the first five centuries of its existence was shaped by the Roman experience. Explain how a fringe Jewish sect that was illegal and persecuted became the official religion of the Empire.

You should try to mention several important ideas/terms. Maybe not all, but most: Christian writings, missionary work, persecutions, heresy, Constantine, church fathers, the Petrine doctrine, monasticism, Eastern Christianity vs.Western Christianity.