Belgium–Luxembourg Economic Union 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 the terms of the treaty, the economic frontier was lifted and the Belgian franc and Luxembourg franc were set at a fixed parity (though revised in 1935 and 1944) establishing a monetary
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