The document discusses the Germanic migrations and the decline of the Western Roman Empire in the 5th-6th centuries AD. As the Empire weakened, Germanic tribes attacked from the north, eventually dividing the Western Empire into kingdoms like the Franks and Ostrogoths. By the 6th century, Western Europe was in crisis without the Roman organization, so Germanic kingdoms adopted aspects of Roman culture like Christianity and Latin-derived languages. One such kingdom was established in Eastern Britain by the Angles, Saxons, and Jutes, while Celts remained in the west.