In 237 B.C., Hamilcar Barca took his nine year old son, Hannibal, to the alter of a Carthaginian god and made him swear that he would always be an enemy to the Romans. Hannibal and his father then left for Spain. The center of Carthaginian power in Spain was the city of New Carthage(modern Carthagena). Hannibal saw firsthand his father's techniques for war (Green 9). When Hamilcar died in battle in 230 B.C., his son-in-law, Hasdrubal, became general and continued Carthage's influence in Spain. In 226 B.C. Hasdrubal signed a treaty with ....