Analysis of information sources in references of the Wikipedia article "Vercingetorix" in English language version.
Because of chronic internal rivalries, Gallic resistance was easily broken, though Vercingetorix's Great Rebellion of 52 BC had notable successes.
Indeed, the Gallic cavalry was probably superior to the Roman, horseman for horseman. Rome's military superiority lay in its mastery of strategy, tactics, discipline, and military engineering. In Gaul, Rome also had the advantage of being able to deal separately with dozens of relatively small, independent, and uncooperative states. Caesar conquered these piecemeal, and the concerted attempt made by a number of them in 52 BC to shake off the Roman yoke came too late.
