Gauls
In 58 BC Julius Caesar launched the Gallic Wars and had conquered the whole of Gaul by 51 BC. He noted that the Gauls (Celtae) were one of the three primary peoples in the area, along with the Aquitanians and the Belgae. Caesar's motivation for the invasion seems to have been his need for gold to pay off his debts and for a successful military expedition to boost his political career. The people of Gaul could provide him with both. So much gold was looted from Gaul that after the war the price of gold fell by as much as 20%. While they were militarily just as brave as the Romans, the internal division between the Gallic tribes guaranteed an easy victory for Caesar, and Vercingetorix's attempt to unite the Gauls against Roman invasion came too late. After the annexation of Gaul a mixed Gallo-Roman culture began to emerge.
Roman–Etruscan Wars
The many similarities between accounts of the campaigns of 389 and 386 – in both Camillus is placed in command, defeats the Volsci and comes to the aid of Sutrium – has caused several modern authors to consider these to be doublets of each other. This was the view taken by Beloch who held that the Gallic sack had a severe and long-lasting effect on Rome's fortunes. Accordingly, Camillus' stunning victories against the Etruscans and Volsci so soon after must be inventions designed to minimize the scale of the Roman defeat. Different later writers then treated these invented victories in different ways, assigning them to different years with different incidental detail, until in Livy's writings they emerge as separate, but ultimately both unhistorical, events.