The United Kingdom of Great Britain and Ireland was established by the Acts of Union in 1801 that united the Kingdom of Great Britain and the Kingdom of Ireland into one unitary and sovereign state. It continued in this form until 1922, after the Irish Free State gained independence, with the remainder continuing as the United Kingdom of Great Britain and Northern Ireland.
- Country
- United Kingdom of Great Britain and Ireland
- Inception
- January 1, 1801
