Which factor was a key reason for the economic success of the Greek city-states?
A. new farming techniques
B. geographical isolation
C. war and conquest
D. a booming system of trade
Answer:
D. a booming system of trade
Explanation:
One major reason for the economic success of the Greek city-states was their successful trade with other civilization.
Athens and Sparta engaged in trade with other countries, buying and selling which helped them to become economically secure and successful.