History of the formation of the United Kingdom Kingdom of England (which included Wales and controlled Ireland) and the Kingdom of Scotland. The once independent Principality of Wales fell under the control of English monarchs from the Statute of Rhuddlan in 1284. The Union of Crowns in 1603, the accidental consequence of a royal marriage one hundred years earlier, united the kingdoms in a personal union, though full political union in the form of the Kingdom of Great Britain required a Treaty of Union in 1706 and Acts of Union in 1707 (to ratify the Treaty). The Act of Union 1800 united the Kingdom of Great Britain with
Acts of Union 1707 the wealth increasing" and in particular that Glasgow had become one of the greatest cities of Britain. A commemorative two-pound coin was issued to mark the tercentennial—300th anniversary—of the Union, which occurred two days before the Scottish Parliament general election on 3 May 2007. The Scottish Executive held a number of commemorative events through the year including an education project led by the Royal Commission on the Ancient and Historical Monuments of Scotland, an exhibition of Union-related objects and documents at the National Museums of Scotland and an exhibition of portraits of people associated with the Union at the National