The Ancien Régime (French pronunciation: [ɑ̃.sjɛ̃ ʁeʒim]; French for "old regime") was the political and social system of the Kingdom of France from the Middle Ages (c. 15th century) until 1792, when hereditary monarchy and the feudal system of French nobility were abolished by the French Revolution. The Ancien Régime was ruled by the late Valois and Bourbon dynasties. The term is occasionally used to refer to the similar feudal systems of the time elsewhere in Europe. The administrative and social structures of the Ancien Régime were the result of years of state-building, legislative acts (like the Ordinance of Villers-Cotterêts), internal conflicts and civil wars, but they remained a patchwork of local privilege and historic differences until the French Revolution ended the system.
Much of the medieval political centralization of France had been lost in the Hundred Years' War, and the Valois Dynasty's attempts at re-establishing control over the scattered political centres of the country were hindered by the Huguenot Wars (or Wars of Religion). Much of the reigns of Henry IV, Louis XIII and the early years of Louis XIV were focused on administrative centralisation. Despite, however, the notion of "absolute monarchy" (typified by the king's right to issue lettres de cachet) and the efforts by the kings to create a centralized state, Ancien Régime France remained a country of systemic irregularities: administrative (including taxation), legal, judicial, and ecclesiastic divisions and prerogatives frequently overlapped, while the French nobility struggled to maintain their own rights in the matters of local government and justice, and powerful internal conflicts (like the Fronde) protested against this centralization.