- Merovingian and Carolingian age
- The emergence of France
- France, 1180 to c. 1490
- The French Revolution and Napoleon, 1789–1815
- France, 1815–1940
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From 395 the division of the Roman Empire into an eastern and a western half reinforced acute internal political stresses that encouraged barbarian penetration of the Danube region and even Italy. The Rhine frontier was again neglected, and the seat of the Gallic prefecture was moved to Arelate. The result was Germanic invasion, most dramatically the mass crossing of the Rhine in 405–406, and civil war. By 418, Franks and Burgundians were established west of the Rhine, and the Visigoths settled in Aquitania (Aquitaine). These Germans, however, were nominally allies of the empire, and, mainly because of the energy of the Roman general Flavius Aetius, they were kept in check. The death of Aetius in 454 and the growing debility of a western imperial government hamstrung by the loss of Africa to the Vandals created a power vacuum in Gaul. It was filled by the Visigoths, at first indirectly through the nomination of the emperor Avitus (reigned 455–456) and then directly by their own kings, the most important being King Euric (466–484). Between 460 and 480 there was steady Visigothic encroachment on Roman territory to the east; the Burgundians followed suit, expanding westward from Sapaudia (now Savoy). In 476 the last imperial possessions in Provence were formally ceded to the Visigoths.
Gaul suffered badly from these developments. Communities near the Rhine were destroyed by war. Refugees fled south, to Roman territory, only to find themselves burdened by crippling taxation and administrative corruption. As is evident from the works of the writer Sidonius Apollinaris (c. 430–c. 490), however, the economic power and with it the lifestyle of the Gallo-Roman aristocracy remained remarkably resilient, whether under Roman emperors or barbarian kings. Many aristocrats, such as, for example, Sidonius himself, also confirmed their standing in their communities by becoming bishops. Until the middle of the 5th century, the leaders of Gallic society, lay and clerical, while learning to live with the barbarian newcomers, still looked to Rome for high office and protection. Thereafter they increasingly cooperated with the German rulers as generals and counselors. Thus, at least in the centre and south of the country, the Gallo-Roman cultural legacy was bequeathed intact to the successor-kingdoms.
John Frederick Drinkwater