The United Kingdom of Great Britain and Northern Ireland was born of the unification of the Kingdoms of England and Scotland, which previously had been distinct states joined in a personal union, under the 1701 Acts of Union. The island of Ireland, also joined via a personal union, was incorporated under the 1800 Acts of Union, while Wales had been part of the Kingdom of England since the 16th century. The United Kingdom has historically played a leading role in developing parliamentary democracy and in advancing literature and science. The 18th and 19th centuries saw the rapid expansion of the British Empire despite the loss of the Thirteen Colonies, and at its zenith in the early 20th century, the British Empire stretched over one-fourth of the earth's surface. The first half of the 20th century saw two World Wars seriously deplete the UK's strength and the Irish Republic withdraw from the union. The second half witnessed the dismantling of the Empire and the UK rebuilding itself into a modern and prosperous European nation. As one of five permanent members of the UN Security Council and a founding member of NATO and the Commonwealth of Nations, the UK pursues a global approach to foreign policy. The devolved Scottish Parliament, the National Assembly for Wales, and the Northern Ireland Assembly were established in 1998.
The UK was an active member of the EU after its accession in 1973, although it chose to remain outside the Economic and Monetary Union. However, motivated in part by frustration at a remote bureaucracy in Brussels and massive migration into the country, UK citizens on 23 June 2016 voted by 52 to 48 percent to leave the EU. The UK became the only country to depart the EU on 31 January 2020, after prolonged negotiations on EU-UK economic and security relationships had been hammered out.
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NOTE: The information regarding United Kingdom on this page is re-published from the 2023 World Fact Book of the United States Central Intelligence Agency and other sources. No claims are made regarding the accuracy of United Kingdom 2023 information contained here. All suggestions for corrections of any errors about United Kingdom 2023 should be addressed to the CIA or the source cited on each page.
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