外交革命
The Treaty of Westminster was a treaty of neutrality signed on 16 January 1756 between Frederick the Great of Prussia and King George II of Great Britain, Elector of Hanover. British fears of a French attack on Hanover were responsible for its development. Based on its terms, both Prussia and Great Britain agreed to seek to prevent any foreign power's forces from passing through the Holy Roman Empire, as part of the Diplomatic Revolution.