The Union of the Crowns (Scottish Gaelic: Aonadh nan Crùintean; Scots: Union o the Crouns)[1][2] was the accession of James VI of Scotland to the throne of the Kingdom of England as James I and the practical unification of some functions (such as overseas diplomacy) of the two separate realms under a single individual on 24 March 1603. It followed the death of James's cousin, Elizabeth I of England, the last monarch of the Tudor dynasty.[3]
The union was personal or dynastic, with the Crown of England and the Crown of Scotland remaining both distinct and separate despite James's best efforts to create a new imperial throne. England and Scotland continued as two separate states sharing a monarch, who directed their domestic and foreign policies, along with Ireland, until the Acts of Union of 1707 during the reign of the last Stuart monarch, Anne. However, there was a republican interregnum in the 1650s, during which the Tender of Union of Oliver Cromwell created the Commonwealth of England and Scotland which ended with the Stuart Restoration.[4]