Treaty of Union

The Treaty of Union is the treaty that created Great Britain. The treaty says that the Kingdom of England, which included Wales, and the Kingdom of Scotland were to be "United into One Kingdom by the Name of Great Britain". At the time it was commonly called the Articles of Union.
The details of the Treaty were agreed on 22 July 1706. Separate Acts of Union were passed by the parliaments of England and Scotland. The treaty took effect on 1 May 1707.