Foreign relations of the Netherlands context of the Western European Union and the European Security and Defence Policy of the EU – and bilaterally, as in the German-Netherlands Corps. In recent years, the Dutch have become significant contributors to UN peacekeeping efforts around the world as well as to the Stabililzation Force in Bosnia and Herzegovina (SFOR) in Bosnia. The Dutch have been strong advocates of European integration, and most aspects of their foreign, economic, and trade policies are coordinated through the European Union (EU). The Dutch postwar customs union with Belgium and Luxembourg (the Benelux group) paved the way for the formation of the
Southern Netherlands until 1867. The King of the Netherlands was Grand Duke of Luxembourg until 1890, when William III was succeeded by his daughter, Wilhelmina of the Netherlands – but Luxembourg still followed the Salic law at the time, which forbade a woman to rule in her own right, so the union of the Dutch and Luxembourger crowns then ended. The northwestern two-thirds of the original Luxembourg remains a province of Belgium. The Spanish Netherlands (Dutch: "Spaanse Nederlanden", Spanish: "Países Bajos españoles") was a portion of the Low Countries controlled by Spain from 1556 to 1714, inherited from the Dukes of Burgundy.