Quora Qestion: Why did Carthage do so Well in Their War Against Rome

If you are referring to the Second Punic War, Carthaginian success was entirely due to one military genius, Hannibal. Hannibal introduced a style of warfare that the Romans had never before experienced and were unprepared for. In the two years after Hannibal crossed the Alps into Italy, Hannibal won four battles, three of them major. [...]