The Byzantium Timeline
After the fall of the Roman Emoire the leftover land was taken over by new empires. The eastern part of the old Roman Empire became the Byzantine Empire with Justinian as the ruler. As their empire expanded, Muslim influence was also expanding, at the same time these two cultures were at war and the Muslim influence spread very widely throughout the Byzantine Empire. The Byzantine Emmpire disintegrated with the help of the Muslims and especially their influence on the culture.