How did Hamilcar Barca influence Hannibal’s hostility toward Rome?

Hamilcar Barca significantly shaped his son Hannibal’s lifelong hostility toward Rome through both personal influence and the strategic legacy he left behind.

According to the historians Polybius and Livy, Hamilcar fostered this enmity by having his son swear an oath of eternal hatred against Rome at an early age. This personal vow was rooted in Hamilcar’s own deep resentment toward the Romans, which stemmed from the harsh terms imposed on Carthage following the First Punic War and Rome’s subsequent seizure of Sardinia and Corsica.123

Beyond this personal indoctrination, Hamilcar provided the structural foundation for Hannibal’s future campaigns. By expanding Carthaginian power into Spain, Hamilcar established a new empire that provided the resources, silver, and military base necessary to challenge Roman dominance. This "unforgiving and unyielding spirit" was passed down to his sons, effectively setting the stage for the Second Punic War, which is often referred to as "Hannibal’s War".134