The largest division of the United Kingdom. There were settlements in England from at least palaeolithic times, and considerable remains exist of neolithic and Bronze Age cultures. These were followed by the arrival of the Celtic peoples whose civilization spread over the whole country. The Romans under Julius Caesar raided the south of Britain in 55 and 54 bc, but full-scale invasion did not take place until a century later; the country was then administered as a Roman province until the Teutonic conquest of Gaul in the early 5th century and the subsequent withdrawal of the last Roman garrison. In the 3rd to 7th centuries Germanic-speaking tribes, traditionally known as Angles, Saxons, and Jutes, raided and then settled, establishing independent kingdoms, and when that of Wessex became dominant in the 9th century England emerged as a distinct political entity before being conquered by William, Duke of Normandy, in 1066. The neighbouring principality of Wales was gradually conquered during the Middle Ages and politically incorporated in the 16th century. During the period of Tudor rule (1485–1603) England emerged as a Protestant state with a strong stable monarchy and as a naval power. Scotland and England have been ruled by one monarch from 1603, and the two parliaments were formally united in 1707. In 1999 a separate Scottish parliament was established, with tax-raising powers and control over local affairs; however, Scottish MPs in the union parliament retained the right to vote on internal English affairs.