On 1 May 1707, the Kingdom of Great Britain was created by the political union of the Kingdom of England (which included Wales) and the Kingdom of Scotland. This event was the result of the Treaty of Union that was agreed on 22 July 1706,[23] and then ratified by both the Parliament of England and Parliament of Scotland each passing an Act of Union in 1707. Almost a century later, the Kingdom of Ireland, already under English control by 1691, merged with the Kingdom of Great Britain to form the United Kingdom with the passing of the Act of Union 1800.