As soon as this became known among the hungry Saxon tribes of northern Germany, they sailed across the North Sea and made themselves at home in the prosperous island. They founded a number of independent Anglo-Saxon kingdoms (so called after the original Angles or English and the Saxon invaders) but these small states were for ever quarrelling with each other and no King was strong enough to establish himself as the head of a united country. For more than five hundred years, Mercia and Northumbria and Wessex and Sussex and Kent and East Anglia, or whatever their names, were exposed to attacks from various Scandinavian pirates. Finally in the eleventh century, England, together with Norway and northern Germany became part of the large Danish Empire of Canute the Great and the last vestiges of independence disappeared. The Danes, in the course of time, were driven away but no sooner was England free, than it was conquered for the fourth time. The new enemies were the descendants of another tribe of Norsemen who early in the tenth century had invaded France and had founded the Duchy of Normandy. William, Duke of Normandy, who for a long time had looked across the water with an envious eye, crossed the Channel in October of the year 1066. At the battle of Hastings, on October the fourteenth of that year, he destroyed the weak forces of Harold of Wessex, the last of the Anglo-Saxon Kings and established himself as King of England. But neither William nor his successors of the House of Anjou and Plantagenet regarded England as their true home. To them the island was merely a part of their great inheritance on the continent--a sort of colony inhabited by rather backward people upon whom they forced their own language and civilisation. Gradually however the "colony" of England gained upon the "Mother country" of Normandy. At the same time the Kings of France were trying desperately to get rid of the powerful Norman-English neighbours who were in truth no more than disobedient servants of the French crown. After a century of war fare the French people, under the leadership of a young girl by the name of Joan of Arc, drove the "foreigners" from their soil. Joan herself, taken a prisoner at the battle of Compiegne in the year 1430 and sold by her Burgundian captors to the English soldiers, was burned as a witch. But the English never gained foothold upon the continent and their Kings were at last able to devote all their time to their British possessions. As the feudal nobility of the island had been engaged in one of those strange feuds which were as common in the middle ages as measles and small-pox, and as the greater part of the old landed proprietors had been killed during these so-called Wars of the Roses, it was quite easy for the Kings to increase their royal power. And by the end of the fifteenth century, England was a strongly centralised country, ruled by Henry VII of the House of Tudor, whose famous Court of Justice, the "Star Chamber"