Franco-Dutch War of the Dutch Republic by surprise, is often referred to as "het Rampjaar" ("the Disaster Year") in Dutch. In order to weaken its Hapsburg rivals in Spain and the Holy Roman Empire, largely Catholic France supported the Dutch Republic during the 1568-1648 Eighty Years War and in 1635, it entered the Thirty Years' War as part of the anti-Imperial Protestant alliance. The 1648 Peace of Westphalia ended the wider war but the subsidiary Franco-Spanish War continued until the 1659 Treaty of the Pyrenees; the net effect was that Spain was no longer the dominant power in Europe, while France emerged
Peace of Westphalia European issues of the time. Scholars of international relations have identified the Peace of Westphalia as the origin of principles crucial to modern international relations, including the inviolability of borders and non-interference in the domestic affairs of sovereign states. This system became known in the literature as Westphalian sovereignty. Although scholars have challenged the association with the Peace of Westphalia, the debate is still structured around the concept of Westphalian sovereignty. Peace of Westphalia The Peace of Westphalia () was a series of peace treaties signed between May and October 1648 in the Westphalian cities of Osnabrück and Münster, largely