रोमन राजा कन्स्टेन्टिन महानले इसाई धर्मलाई राज्यको मुख्य धर्म कहिले घोषित गरे ?

Option A

During the reign of the Roman Emperor Constantine (कन्स्टेन्टिन) the Great (AD 306–337), Christianity began to transition to the dominant religion of the Roman Empire. Historians remain uncertain about Constantine's reasons for favoring Christianity, and theologians and historians have often argued about which form of early Christianity he subscribed to. There is no consensus among scholars as to whether he adopted his mother Helena's Christianity in his youth, or, as claimed by Eusebius, encouraged her to convert to the faith himself.