Quetzalcoatl is an Aztec God that is worshipped by people in other ancient cultures as well. To the Egyptians he is Thoth. In both these ancient beliefs and many others he is the God of Knowledge and Wisdom. Also, Hermes.
Roman–Persian Wars.The Battle of Nineveh in 627 AD was the climactic battle of the Byzantine-Sassanid War of 602–628. The Byzantine victory later resulted in civil war in Persia and for a period of time restored the empire to its ancient boundaries in the Middle East. This resurgence of power and prestige was not to last, however, as within a matter of decades an Arab Caliphate emerged from Arabia and once again brought the empire to the brink of destruction.