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 were unhappy about the prospect, however. English overseas possessions made England very wealthy in comparison to Scotland, a poor country with few roads, very little industry and almost no Navy. This made some view unification as a markedly unequal relationship. In Scotland, some claimed that union would enable Scotland to recover from the financial disaster wrought by the Darien scheme through English assistance and the lifting of measures put in place through the Alien Act to force the Scottish Parliament into compliance with the Act of Settlement. The combined votes of the Court party with a majority of the Squadrone