England is the largest and most populous country of the United Kingdom, its mainland territory occupies most of the southern two-thirds of the island of Great Britain. England shares land borders with Scotland to the north and Wales to the west and elsewhere is bordered by the North Sea, Irish Sea, Celtic Sea, Bristol Channel and English Channel. The capital is London, the largest urban area in Great Britain, and the largest urban zone in the European Union by most, but not all, measures. The Kingdom of England (including the Principality of Wales) continued as a separate state until 1 May 1707, when the Acts of Union, putting into effect the terms agreed in the Treaty of Union the previous year, resulted in political union with the Kingdom of Scotland to create the united Kingdom of Great Britain.
Kingdom of England was a geographical term to describe the part of Britain occupied by the Anglo-Saxons, rather than a name of an individual nation-state. It became politically united through the expansion of the kingdom of Wessex, whose king Athelstan brought the whole of England under one ruler for the first time in 927, although unification did not become permanent until 954, when Edred defeated Eric Bloodaxe and became King of England.
