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
Tourism in Luxembourg the Netherlands, Belgium and Germany with substantial numbers from France, the United Kingdom and the United States. Camping is popular in Luxembourg, particularly with the Dutch, who camp for much longer than other nationalities, especially in the Ardennes and the Mullerthal. Bordered by Belgium, France, and Germany, Luxembourg has a population of over half a million people in an area of . A representative democracy and constitutional monarchy ruled by a Grand Duke, it is the world's only remaining Grand Duchy. The country has a highly developed economy, with the world's highest GDP per capita. Its strategic importance dates back