What made Carthage a rich and powerful force in the Mediterranean
region?

By 300 BC, it became one of the largest and richest cities in antiquity, with its colonies, vassals, and satellite states constituting more territory than any other polity in the region. Carthage's wealth and power rested primarily on its strategic location, which provided access to abundant fertile land and major trade routes.

Explanation

There was also A very succsesful period of trades.

Hope this helps, good luck!

the answer is option a.