History of Belgium from Korea in 1955. On September 5, 1944, the Benelux Customs Union was created. It entered into force in 1948, and ceased to exist on 1 November 1960, when it was replaced by the Benelux Economic Union after a treaty signed in The Hague on February 3, 1958. The Benelux Parliament was created in 1955. The Treaty of Brussels, signed on 17 March 1948 by Belgium, the Netherlands, Luxembourg, France, and the United Kingdom, is considered the precursor to the NATO agreement, which Belgium became an official member of on April 4, 1949. The headquarters of NATO are located in
Habsburg Netherlands on. In 1581, the Seven United Provinces seceded to form the Dutch Republic; the remaining Spanish Southern Netherlands eventually passed on to Habsburg Austria. Finally, the Austrian Netherlands were annexed by the French First Republic in 1795, becoming the French client state of the Batavian Republic. The Habsburg Netherlands was a geo-political entity covering the whole of the Low Countries (i.e. the present-day Netherlands, Belgium, Luxembourg, and French Nord-Pas-de-Calais) from 1482 to 1581. Already under the rule of the Burgundian duke Philip the Good (1419–1467), the provinces of the Netherlands began to grow together: Flanders, Artois and Mechelen, Namur, Holland,