The "Peace of the Pyrenees" refers to a treaty signed in 1659 between France and Spain. This agreement marked the end of the Franco-Spanish War and aimed to resolve territorial disputes in the Pyrenees region. It established new borders and allowed for a period of relative stability in the area. The treaty also included provisions for the exchange of prisoners and the recognition of Louis XIV as the legitimate ruler of France. The Peace of the Pyrenees is significant as it laid the groundwork for future diplomatic relations between the two nations and influenced the political landscape of Europe.