Many people believe Christianity became popular in Rome, but it actually "flowered" in the Byzantine Empire. Constantine was a Christian convert and made Constantinople the new capital of Rome. This played a big part in Christianity and the Byzantine Empire.
Justinian I, a former Byzantine Emperor, is considered a saint among Orthodox Christians. He wanted the empire to be in a unity of faith. Justinian I had churches built and many of them became "religious centers." One of his most famous buildings is the Hagia Sophia. It became the center of the Greek Orthodox Church for a number of centuries. This, and his other architectural works, converted many people to Christianity.
Justinian I, a former Byzantine Emperor, is considered a saint among Orthodox Christians. He wanted the empire to be in a unity of faith. Justinian I had churches built and many of them became "religious centers." One of his most famous buildings is the Hagia Sophia. It became the center of the Greek Orthodox Church for a number of centuries. This, and his other architectural works, converted many people to Christianity.