The document provides an overview of the history of England from the Celtic period through the Norman conquest in 1066. It describes how the Celts were displaced by invading Anglo-Saxons in the 5th century AD, establishing small kingdoms. Christianity eventually spread throughout England in the following centuries. Vikings then began raiding England in the 8th century and some settled, with Alfred the Great defending Wessex against them. In 1066, William the Conqueror defeated the English at Hastings and established a new Norman ruling class, introducing feudalism.