Britannica Sources used in this answer

What was the League of Augsburg and why did Leopold I support it?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

The League of Augsburg was a coalition formed in 1686 by the Holy Roman emperor Leopold I, along with the kings of Sweden and Spain and the electors of Bavaria, Saxony, and the Palatinate.1

Leopold I supported and helped form the league to oppose the expansionist policies of Louis XIV of France. During this period, Louis XIV pursued an aggressive foreign policy, which included the seizure of the independent city of Strassburg in 1681 and the use of judicial courts to claim sovereignty over various territories in Alsace and Franche-Comté. From the Habsburg perspective, these actions represented a direct threat to imperial security, particularly because Strassburg served as a gateway through which French armies could reach the Danube valley and Vienna.12

Although the league was intended to curb French influence, it ultimately proved ineffective due to the reluctance of some member princes to actively oppose France and a lack of provisions for combined military action.1