reformed the administrative structures of the Roman Empire, Aquitania was split into three provinces. The territory south of the Garonne River, corresponding to the original Aquitania, was made a province called Novempopulania (that is, "land of the nine tribes"), while the part of Gallia Aquitania north of the Garonne became the province of Aquitanica I and the province of Aquitanica II. The territory of Novempopulania corresponded quite well to what we call now Gascony. The Aquitania Novempopulana or Novempopulania suffered like the rest of the Western Roman Empire from the invasions of Germanic tribes, most notably the Vandals in 407–409. In 416–418, Novempopulania was delivered to the Visigoths as their federate settlement lands and became part of the Visigoth kingdom of Toulouse, while other than the region of the Garonne river their actual grip on the area may have been rather loose. The Visigoths were defeated by the Franks in 507, and fled into Spain and Septimania. Novempopulania then became part of the Frankish Kingdom like the rest of southern France. However, Novempopulania was far away from the home base of the Franks in northern France, and was only very loosely controlled by the Franks. During all the troubled and historically obscure period, starting from early 5th-century accounts, the bagaudae are often cited, social uprisings against tax exaction and feudalization, largely associated to Vasconic unrest. Duchy of Gascony Old historical literature sometimes claims the Basques took control of the whole of Novempopulania in the Early Middle Ages, founding its claims on the testimony of Gregory of Tours, on the etymological link between the words "Basque" and "Gascon" – both derived from "Vascones" or "Wasconia", the latter being used to name the whole of Novempopulania. Modern historians reject this hypothesis, which is sustained by no archeological evidence. For Juan José Larrea, and Pierre Bonnassie, "a Vascon expansionism in Aquitany is not proved and is not necessary to understand the historical evolution of this region". This Basque-related culture and race is, whatever the origin, attested in (mainly Carolingian) Medieval documents, while their exact boundaries remain unclear ("Wascones, qui trans Garonnam et circa Pirineum montem habitant" -- "Wascones, who live across the Garonne and around the Pyrenees mountains", as stated in the Royal Frankish Annals, for one). The word Vasconia (w often evolved into g under the influence of Romance languages; cf. warranty and guarantee, warden and guardian, wile and guile, William and