The Benelux Union (Dutch: Benelux Unie; French: Union Benelux; Luxembourgish: Benelux-Unioun) or Benelux is a politico-economic union and formal international intergovernmental cooperation of three neighbouring states in Western Europe: Belgium, the Netherlands, and Luxembourg. The name is a portmanteau formed from joining the first few letters of each country's name and was first used to name the customs agreement that initiated the union (signed in 1944). It is now used more generally to refer to the geographic, economic, and cultural grouping of the three countries.