The word banlieue, which is French for "suburb," does not necessarily refer to an environment of social disenfranchisement. Indeed, there exist many wealthy suburbs, such as Neuilly-sur-Seine (the wealthiest commune of France) and Versailles outside Paris. Nevertheless, the term banlieues has often been used to describe troubled suburban communities—those with high unemployment, high crime rates, and frequently, a high proportion of residents of foreign origin mainly from former French African colonies and therefore Berbers, Blacks and Arabs.
The destruction of World War II, coupled with an increase in the country's population (due both to immigration and natural increase) left France with a severe housing shortage. During the 1950s, shantytowns (bidonvilles) developed on the outskirts of major cities. During the winter of 1954, popular priest Abbé Pierre urged the government to work on behalf of the country's large homeless population. To relieve the shortage, and end the practice of illegal squatting in public places, the governments of the Fourth and early Fifth Republics began the construction of huge housing projects. These included the villes nouvelles ("New towns") of Sarcelles, Cergy-Pontoise, Marne-la-Vallée and Sénart. These were financed in part by the Marshall Plan, and organized through central planning, fixing industrial objectives to meet (Dirigisme). The villes nouvelles owe much to Le Corbusier's architectural theories, which had been decried before the war.