Original: The Union's name is formed from the beginning of each country's name; it was possibly created for the Benelux Customs Union, Revue de l'Institut International de Statistique (/O1947/O) Vol.
Simplified: This parliamentary assembly is composed of 21 members of the Dutch parliament, 21 members of the Belgian national and regional parliaments, and 7 members of the Luxembourgish parliament.