The document summarizes the history of the Anglo-Saxon period in Britain from 449 to 1066 AD. It describes the initial invasion and settlement of Britain by various Germanic tribes including the Angles, Saxons, and Jutes, who gradually drove the native Britons west. Christianity was reintroduced in 597 AD when St. Augustine converted King Ethelbert of Kent. Viking invasions from the late 8th century disrupted Anglo-Saxon rule, until King Alfred of Wessex unified England in the late 9th century. The era ended with the Norman conquest of 1066, when William, Duke of Normandy defeated the Anglo-Saxon King Harold II at the Battle of Hastings.