Carthaginian Iberia
After the First Punic War, the Carthaginian family descending from Hamilcar Barca began the effective subjugation of Hispania which would extend over the greater part of the south and the west of the peninsula. This subjugation was achieved through tributes, alliances, marriages or simply by force. The peninsula would go on to supply Carthage with a significant number of troops — both mercenaries and draftees — that assisted in its confrontations with Ancient Rome as well as its reaffirmation of dominance over Northern Africa. The Romans considered this sufficient motive to invade Hispania. The Ilergetes (from Northeast Hispania) and the legendary Baleric Slingers particularly stood out amongst these troops coming from diverse tribes of the region.
Read more about this topic: Roman Conquest Of Hispania