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
Burgundian Netherlands Burgundian Netherlands In the history of the Low Countries, the Burgundian Netherlands (, , , ) were a number of Imperial and French fiefs ruled in personal union by the House of Valois-Burgundy in the period from 1384 to 1482 and later their Habsburg heirs. The area comprised large parts of present-day Belgium and the Netherlands, as well as Luxembourg and parts of northern France. A fair share (but not most) of these territories were inherited by the Burgundian dukes, a younger branch of the French royal House of Valois in 1384, upon the death of Count Louis II of