Where was William IV of the United Kingdom born?

London, the capital city of:England the:United Kingdom London, the world's largest city from about 1831 to 1925

Middlesex, from the Old English Middelseaxe (i.e. "the central Saxons"), one of the 39 historic counties of England and the second smallest by area

Great Britain, the island lying to the northwest of Continental Europe

Buckingham Palace, in London, the principal residence and office of the British monarch

The City of Westminster, the London borough occupying much of the central area of London, England, including most of the West End

England, the constituent country that is part of the United Kingdom

The United Kingdom of Great Britain and Northern Ireland (commonly known as the United Kingdom, the UK or Britain), the sovereign state located off the north-western coast of continental Europe

Europe (the traditional continent starting at the Atlantic and ending at the Ural mountains in Russia)