for example, in the postal code and was until recently used for all vehicle registration plates. Residents commonly use the numbers to refer to their own department or a neighbouring one, for example inhabitants of Loiret may refer to their department as "the 45". More distant departments are generally referred to by their names, as few people know the numbers of all the departments. In 2014, President François Hollande proposed abolishing departmental councils by 2020, which would have maintained the departments as administrative divisions, and transferring their powers to other levels of governance. This reform project has since been scrapped. History The first French territorial departments were proposed in 1665 by Marc-René d'Argenson to serve as administrative areas purely for the Ponts et Chaussées (Bridges and Highways) infrastructure administration. Before the French Revolution, France gained territory gradually through the annexation of a mosaic of independent entities. By the end of the Ancien Régime it was organised into provinces. During the Revolution they were dissolved, partly in order to weaken old loyalties. The National Constituent Assembly decided to create a more uniform division into departments (département) and districts in late 1789. The process began on 4 August 1789 with the elimination of provincial privileges, and a 22 December 1789 decree (with letters patent in January 1790) provided for the termination of the provincial governments. The modern department system, as all-purpose units of the government, was decreed on 26 February 1790 (with letters patent on 4 March 1790) by the National Constituent Assembly. Their boundaries served two purposes: Boundaries were chosen to break up France's historical regions in an attempt to erase cultural differences and build a more homogeneous nation. Boundaries were set so that every settlement in the country was within a day's ride of the capital of a department. This was a security measure, intended to keep the entire national territory under close control. The old nomenclature was carefully avoided in naming the new departments. Most were named after an area's principal river or other physical features. Even Paris was in the department of Seine. Savoy, during its temporary occupation, became the department of Mont-Blanc. The provinces continued to exist administratively until 21 September 1791. The number of departments, initially 83, had been increased to 130 by 1809 with the territorial gains of the Republic and of the First French Empire. Following the defeats of Napoleon in 1814–1815 the Congress