The Anglo-Saxon period in Britain lasted from 449 to 1066. During this time, various groups invaded and settled in Britain, including Celts, Romans, Angles, Saxons, Jutes, and Vikings. Anglo-Saxon society was organized into kingdoms ruled by kings. They were farmers, craftspeople, and warriors who valued bravery and loyalty. Their culture included oral poetry and pagan beliefs until the arrival of Christianity in the 6th century. The Vikings launched raids starting in the 9th century, occupying parts of England until King Alfred resisted further expansion in the late 9th century. Ultimately, the Norman conquest in 1066 marked the end of Anglo-Saxon rule.