United Kingdom of Great Britain and Ireland (King of America)

United Kingdom of Great Britain and Ireland ← 1801–1918 →   → Flag Coat of arms Anthem God Save The King Capital London Official language English Religion {{{religion}}} Government Constitutional Monarchy Monarch  - 1801-1820 George III  - 1910-1918 George V Prime Minister  - 1801-1804 Henry Addington  - 1916-1918 David Lloyd George History  - Acts of Union 1801 1 January 1801  - Irish Independence 10 November 1918 Currency Pound Sterling