 These many tribes were not united and often disagreed or even conflicted with each other.Tribal warfare was a regular feature of Celtic societies, using war to exercise political control and harass rivals, for economic advantage, and in some cases to conquer territory.An example in this area was the fight between the Celtic Insubres and the Taurini (Ligurian) that Hannibal intervened at, when he went to Italy just after crossing the Alps.