Carlton J. H. Hayes,
A Political and Social History of Modern Europe V.1
“ Alarmed by the steady advance of French power, the Emperor Leopold in 1686 succeeded in forming the League of Augsburg with Spain, Sweden, and several German princes, in order to preserve the territorial integrity of the Holy Roman Empire. Nor was it long before the League of Augsburg was called upon to resist further encroachments of the French king. In 1688 Louis dispatched a large army into the Rhenish Palatinate to enforce a preposterous claim which he had advanced to that valuable district. ”
