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
Fortress of Luxembourg garrison consisted exclusively of Prussian troops: the Netherlands never provided their one-quarter of the garrison. Later, the Luxembourg-Prussian Treaty of 17 November 1856 gave Prussia the exclusive right to garrison troops in Luxembourg. In the 1830, the southern provinces of the United Kingdom of the Netherlands broke off to form the Kingdom of Belgium. At the outbreak of this Belgian Revolution, most Luxembourgers joined the rebels, and from 1830 to 1839 almost all of Luxembourg was administered as part of Belgium. The fortress and city of Luxembourg, held by the Dutch and Prussian troops, was the only part of the