The Act of Union

By the opening of the eighteenth century, England and Scotland had shared a monarch since 1603, when James VI of Scotland became James I of England, yet they remained separate kingdoms with their own parliaments. Tensions over the royal succession, trade restrictions, and the financial collapse of Scotland's Darien colonial venture pushed both sides toward a closer arrangement. Negotiations produced terms acceptable to political elites, though the union was unpopular among many ordinary Scots.

The Acts of Union, passed by both parliaments and taking effect on 1 May 1707, formally merged England and Scotland into the single Kingdom of Great Britain. Scotland retained its own distinct legal system, established Presbyterian church, and educational institutions, but its parliament was dissolved. In its place Scotland sent members to the unified Parliament at Westminster, with a fixed number of seats in both the Commons and the House of Lords.

The union created a single state with a common flag, currency, and free trade across the island, opening England's colonial markets to Scottish merchants. While resented at first, it gradually brought economic benefits, and Scotland later flourished during the Enlightenment and Industrial Revolution. The settlement proved durable, forming the constitutional foundation of the British state that would expand into a global empire.