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
Kingdom of the Netherlands state of the German Confederation. In 1830, Belgium seceded from the Kingdom, a step that was recognised by the Netherlands only in 1839. At that point, Luxembourg became a fully independent country in a personal union with the Netherlands. Luxembourg also lost more than half of its territory to Belgium. To compensate the German Confederation for that loss, the remainder of the Dutch province of Limburg received the same status that Luxembourg had enjoyed before, as a Dutch province that at the same time formed a Duchy of the German Confederation. That status was reversed when the German Confederation ceased