Units of measurement in France before the French Revolution 4 parts in one million) than the "pied" used in France. According to the law of 19 Frimaire An VIII (December 10, 1799), Traditionally, the French pound ("livre") was defined as the mass of exactly of a French cubic foot of water. When the kilogram was defined, the knowledge that a "pied du Roi cube" filled with water masses exactly 70 French pounds was apparently lost. According to the traditional (cubic foot) definition, one "livre" would have been about 489.675 grams. According to the kilogramme definition, one "livre" was about 489.506 grammes. The difference is about 0.035%. However, a small
Pied-Noir specifically, the term "Pied-Noir" is used for those of European ancestry who "returned" to mainland France as soon as Algeria gained independence, or in the months following. From the French invasion on 18 June 1830 until its independence, Algeria was administratively part of France, and its European population was simply called Algerians or colons (colonists), whereas the Muslim people of Algeria were called Arabs, Muslims or Indigenous. The term ""pied-noir"" began to be commonly used shortly before the end of the Algerian War in 1962. As of the last census in French-ruled Algeria, taken on 1 June 1960, there were