The document discusses the Germanic migrations and the decline of the Western Roman Empire in the 5th-6th centuries AD. As the Roman Empire faced economic and military crises, Germanic tribes attacked from the north. By 476 AD, the last Western Roman emperor was deposed and the empire was divided among Germanic kingdoms like the Franks and Ostrogoths. These kingdoms struggled with organization at first but eventually adopted aspects of Roman culture like Christianity and the Latin language. Concurrently, Anglo-Saxon tribes invaded Britain, establishing kingdoms in the east while Celtic peoples remained in the west.