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 in World War II Luxembourg to attempt to reach an agreement with the occupiers whereby Luxembourg could continue to preserve some independence while remaining a Nazi protectorate, and called for the return of the Grand Duchess. All possibility of compromise was eventually lost when Luxembourg was effectively incorporated into the German "Gau Koblenz-Trier" (renamed "Gau Moselland" in 1942) and all its own government functions were abolished from July 1940, unlike occupied Belgium and the Netherlands which preserved their state functions under German control. From August 1942, Luxembourg was officially made part of Germany. From August 1940, speaking French was forbidden by proclamation of Gustav