The Anglo-Saxon period in Britain lasted from 449 to 1066 AD. It was a time of war and conflict as various Germanic tribes invaded and established kingdoms across the island. The period saw the introduction of Old English and the conversion to Christianity. By the late 10th century, Danish invasions had resulted in much of England coming under Danish rule until Alfred the Great reestablished Saxon control in the south. The Norman conquest of 1066 marked the end of Anglo-Saxon rule.