Answer:
Option: b. their multiethnic empire proved far more stable than any of the Greeks
Step-by-step explanation:
The Carthaginian empire formed with the collaboration of Phoenician colonies, which situated in the Northwest Africa region resulted in growing into a powerful empire. The Phoenician colonies grew to develop in the coastal region and controlled the Mediterranean sea for trading purposes.
The empire was built with multi-ethnic groups because of coastal cities, which allow people from different regions to settle here for trade including Hispanics, Celts, Italians, and native Sicilians, Africans, and Punics.