Question: The raid of the Po Valley in 203 BC was the culmination of a major war, carried out by the Carthaginian commander Mago, son of Hamilcar Barca, at the end of the Second Punic war between Rome and which location, that was a Phoenician city-state, during the 7th to 3rd centuries BC?
Sentence (from "Po Valley raid"): Mago suffered defeat and had to retreat.
Relevant evidence: No