Belgium felt he had collaborated with Germany during the war. The Belgian Congo gained independence in 1960 during the Congo Crisis; Ruanda-Urundi followed with its independence two years later. Belgium joined NATO as a founding member and formed the Benelux group of nations with the Netherlands and Luxembourg. Belgium became one of the six founding members of the European Coal and Steel Community in 1951 and of the European Atomic Energy Community and European Economic Community, established in 1957. The latter has now become the European Union, for which Belgium hosts major administrations and institutions, including the European Commission, the Council
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,