Historical, cultural, and governmental region, southeast-coastal France. Provence was part of Roman Gallia Transalpina. With the breakdown of the Roman Empire in the late 5th century, Provence was invaded successively by the Visigoths, Burgundians, and Ostrogoths. It came under the rule of the Franks c. 536. During the 13th century it was involved in the Albigensian Crusade. It was united with the French crown in 1481. The language of Provence, Provençal, was important in medieval literature, and Provence's Romanesque architecture was an outstanding cultural achievement of the Middle Ages. The region suffered in the 16th-century Wars of Religion. In 1790, during the French Revolution, it lost its political institutions and was divided into several départements. The historical region of Provence is roughly coextensive with the present-day région of Provence-Alpes-Côte d'Azur (pop., 2003 est.: 4,665,051), which has an area of 12,124 sq mi (31,400 sq km); its capital is Marseille.