The Treaty of the Pyrenees was signed on November 7, 1659, marking the end of the conflict between France and Spain that had lasted for over twenty years. This treaty established the borders between the two nations, with France gaining territories such as Roussillon and parts of Catalonia. In addition to territorial changes, the treaty included provisions for the marriage of Louis XIV of France to Maria Theresa of Spain, which aimed to strengthen ties between the two countries. The treaty significantly altered the balance of power in Europe and laid the groundwork for future diplomatic relations.