Britannica
Sources used in this answer
- Seven Yearsā War - Defensive alliances
- Seven Yearsā War - 1762
- Frederick II - Accession to the throne and foreign policy
- Seven Yearsā War - The diplomatic revolution and the prelude to the French and Indian War
- Seven Yearsā War - Preliminary negotiations and hostilities in the colonies
- German Empire - BĆ¼low and āworld policyā
- Germany - The defeat of Austria
How did Frederick IIās alliance with Britain in 1756 change European diplomacy?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Frederick II
Frederick II, painting in the Castello di Miramare, Trieste, Italy.
The alliance between Frederick II of Prussia and Great Britain, formalized by the Convention of Westminster on January 16, 1756, was a primary catalyst for the "diplomatic revolution" that fundamentally realigned European powers.12
By agreeing to jointly resist any foreign invasion of Germany, Frederick and Britain effectively abandoned their previous, albeit ineffective, alliancesāPrussia with France and Britain with Austria. This shift had profound consequences:132
- Franco-Austrian Rapprochement: Dismayed by the convention, France and Austria, long-standing rivals, drew closer together to avoid isolation, culminating in the First Treaty of Versailles on May 1, 1756.1
- Destabilization: The new alignment created a volatile environment where Austria and Russia began massing troops against Prussia, leading Frederick to launch a preventive war by invading Saxony in August 1756.13
- Shift in Power Dynamics: This reversal of alliances shattered the traditional European balance of power, setting the stage for the Seven Years' War and marking a definitive end to the previous system of international relations.12