What roman emperor issued an edict of tolerance for all religions, patronized christianity, and moved the center of the roman empire to byzantium (present day istanbul, in turkey)?
He was a Roman King of Greek background who changed history by becoming the first Roman Emperor to convert to Christianity.
He also moved the capital of his Empire to Byzantium, modern-day Istanbul. The city bore his name for much of the next thousand or so years, being known as Constantinople.
