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
Luxembourg at the 1920 Summer Olympics advance past the initial heats in the sprint event, and did not finish the 50 kilometres. Luxembourg competed in the Olympic football tournament for the first time. The team lost to the Netherlands in the first round. Three weightlifters represented Luxembourg in 1920. It was the nation's debut in the sport. Alzin won the country's first medal in the sport, a silver in the heavyweight. Two wrestlers, both in the Greco-Roman style, competed for Luxembourg in 1920. Both men lost all of their matches. Luxembourg at the 1920 Summer Olympics Luxembourg competed at the 1920 Summer Olympics in Antwerp, Belgium.