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
Geography of Belgium have repercussions for neighboring countries; uncertainties regarding federal and regional responsibilities (now resolved) have slowed progress in tackling environmental challenges. The main cities in Belgium in terms of population are Brussels, Antwerp, Ghent, Charleroi and Liège. Other notable cities include Bruges, Namur, Leuven, Mons and Mechelen. Geography of Belgium Belgium is a federal state located in Western Europe, bordering the North Sea. Belgium shares borders with France (556 km), Germany (133 km), Luxembourg (130 km) and the Netherlands (478 km). Belgium comprises the regions of Flanders, Wallonia and Brussels. Total renewable water resources: 18.3 cu km (2011) Freshwater withdrawal (domestic/industrial/agricultural):