Union of the Crowns create a new "imperial" throne of "Great Britain". England and Scotland continued as autonomous states sharing a monarch with Ireland (with an interregnum in the 1650s during the republican unitary state of the Commonwealth and the Protectorate), until the Acts of Union of 1707 during the reign of the last Stuart monarch, Anne. In August 1503, James IV of Scotland married Margaret, eldest daughter of Henry VII of England, and the spirit of the new age was celebrated by the poet William Dunbar in "The Thrissil and the Rois". The marriage was the outcome of the Treaty of Perpetual Peace,
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