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,
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 and Scotland to put the agreed Articles into effect. The political union