The Britons who were the original inhabitants of Great Britain had no written history before 55 B.C. They were Celts by race and were divided into many tribes. They worshiped many gods and their priests were called druids. In A.D. 43 the Romans began an invasion which resulted in the Roman occupation of Britain, which lasted over 400 years. To prevent attacks from the north the Romans built Hadrian’s Wall in 122, which was 117 km long. Despite the Roman occupation, the old Celtic social system was not completely destroyed and the British language existed side by side with Latin. The Romans left in the first half of the 5th century. In the second half of the 5th century there where attacks from Gremany, led mainly by Angles, Saxons and Jutes. They settled on the east and south-east coast and began to spread across the island , driving back the original Britons into the western part. At the biginning of the 9th century the Danes and the Norsemen attacked England. King Alfred the Great was successful in stopping their influence in the southern parts of the country. In 1066 Harold was elected as a new king but his was still only a boy. There William of Normandy (William the Conqueror) saw his chance and he defeated the army of Harold. He was crowned 1066. Henry I. issued a Charter of Liberties.