Administrative geography of the United Kingdom areas and the statistical territories defined with the modern and systems. This structure was formed by the union agreed between the former sovereign states, the Kingdom of England (which included the conquered principality of Wales) and the Kingdom of Scotland in the Treaty of Union and enacted by the Acts of Union 1707 to form the single Kingdom of Great Britain (1707–1800); followed by the Act of Union 1800, which combined Great Britain with the Kingdom of Ireland to form the United Kingdom of Great Britain and Ireland. The independence of the Irish Free State in 1922, following the partition
Treaty of Union void. The following commissioners were appointed to negotiate the Treaty of Union: Treaty of Union The Treaty of Union is the name usually now given to the agreement which led to the creation of the new state of Great Britain, stating that England (which already included Wales) and Scotland were to be "United into One Kingdom by the Name of Great Britain", At the time it was more often referred to as the Articles of Union. The details of the Treaty were agreed on 22 July 1706, and separate Acts of Union were then passed by the parliaments of England