Belgium–Luxembourg Economic Union entrusted to a Board of Directors consisting of two Belgian members (including the chairman) and one Luxembourgish member, and the Higher Council of the Union (with three Belgian and two Luxembourgish members). Belgium–Luxembourg Economic Union The Belgium–Luxembourg Economic Union (, , ), abbreviated to BLEU or UEBL, is an economic union between Belgium and Luxembourg, two countries in the Benelux Union. BLEU was created by a treaty, signed on 25 July 1921, despite a referendum against such a proposal, between Belgium and Luxembourg, and came into effect upon ratification by the Luxembourg Chamber of Deputies on 22 December 1922. Under
Luxembourg wine of produce were now consumed domestically, while the rest was exported, mostly to Belgium. The Moselle area was the only region of the country which had opted for Belgium over France as an economic partner in the referendum of 1919. During 1983-1987, 57% of produce was exported, four-fifths of this to Belgium. All official wine designations in Luxembourg are French language terms. One single appellation is used for all of Luxembourg: "Moselle Luxembourgeoise". This designation, usually referred to as the "Marque Nationale" (national seal), indicates that the wine is made entirely from Luxembourgian grapes and fulfills certain requirements. The "Marque