The United Kingdom of Great Britain and Northern Ireland, or just The United Kingdom, also known as The Great Britain, Britain, and the UK, is a Country that has arguably the biggest impact on the Modern World. It also supposedly has the Largest Empire in History, spanning 38 million sq. km (25% of the total landmass). From 1815, the Treaty of Paris, to 1914, World War I, the UK dominated the world's economy and Industry, and could be rivaled by France, and later Germany and the USA.