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
Tourism in Luxembourg the Netherlands, Belgium and Germany with substantial numbers from France, the United Kingdom and the United States. Camping is popular in Luxembourg, particularly with the Dutch, who camp for much longer than other nationalities, especially in the Ardennes and the Mullerthal. Bordered by Belgium, France, and Germany, Luxembourg has a population of over half a million people in an area of . A representative democracy and constitutional monarchy ruled by a Grand Duke, it is the world's only remaining Grand Duchy. The country has a highly developed economy, with the world's highest GDP per capita. Its strategic importance dates back