The Byzantine Empire
In 330 A.D. Roman Emperor Constantine chose Byzantium as the new Roman capital, Constantinople. Constantine had made Christianity as Rome’s official religion but many people didn't like this. Constantine ruled the Roman Empire, after his death in 337 and things went bad. In 364 Emperor Valentinian divided the empire into two, the western and eastern. He gave himself power in the west and his brother Valens in the east. In the west, there was pure attacks from German invaders and barbarians. In 476, the barbarian Odoacer overthrew the western Roman emperor, and Rome had fallen. The eastern side changed their name to the Byzantine Empire and that's how it was started but it was never the same and they struggled until their fall in 1453.