. Only the Salian Franks formed a kingdom on Roman-held soil that was acknowledged by the Romans after 357. In the climate of the collapse of imperial authority in the West, the Frankish tribes were united under the Merovingians and conquered all of Gaul save Septimania in the 6th century

The Merovingian dynasty, descended from the Salians, founded one of the Germanic monarchies which replaced the Western Roman Empire from the fifth century. The Frankish state consolidated its hold over large parts of western Europe by the end of the eighth century, developing into the Carolingian Empire which dominated most of Western Europe. This empire would gradually evolve into France and the Holy Roman Empire.