Which Roman Emperor granted religious tolerance to Christians?

History shows that most Roman emperors were tolerant of Christianity. It was Galerius who formalised this by proclaiming the Edict of Toleration, overturning the Great Persecution of Diocletian.

Constantine subsequently extended privileges to the Christian Church by the Edict of Milan.

AnswerThe Roman emperor Galerius issued the Edict of Toleration that brought an end to the Great Persecution instituted by his predecessor, Diocletian. Strangely, it was Galerius who had pressured Diocletian to undertake the persecution of Christians. Constantine subsequently issued a further edict, the Edict of Milan that gave the Christians positive advantages.