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
Duchy of Limburg Eighty Years' War, ended by the 1648 Peace of Westphalia. An area known as Limburg of the States, consisting of parts of Overmaas (but no part of the Duchy of Limburg itself), was ceded to the Dutch Republic. In 1661, the Dutch and the Spanish agreed on a re-partition of the county of Dalhem. The duchy of Limburg itself remained undivided under Spanish Habsburg rule as part of the Southern Netherlands, passing to the Austrian Habsburgs under the Treaty of Utrecht in 1713. When the region was occupied by the French in 1794, the Austrian duchy of Limburg proper was