In the early Middle Ages The decline in population, a shrinking city. And the barbarian invasions Began in late antiquity and progresses rapidly. These barbarian invaders set up his own kingdom in the rest of the Western Roman Empire. In the 7th century, North Africa and the Middle East. Which had been part of the Eastern Roman Empire. Has become the Islamic empire was conquered by the successors of the Prophet Muhammad. Although there have been many changes in the social and political structure. But it does not change radically from classical antiquity. Eastern Roman Empire or Byzantine Empire still survive and maintain their power was out. In addition, the emerging empire is still largely associated with the remnants of Roman institutions. While the temples of Christianity had spread throughout Western Europe. 7th and 8th century Franks under the rule of the dynasty of the laptop Eฌi he had ordained empire, which covers most of Western Europe with that name. Empire of the lag between Eฌi Lyon. Which endures until the 9th century, when the empire collapsed from the force of the pressure from the outside, such as the Viking invasions from the north. The Magyars from the east. Sarah Andersen and the south.