Which was a reason for the development of independent city-states in ancient Greece?

A.
Rapid rivers made trade with non-Greeks more profitable than trade within Greece.

B.
Rugged terrain limited trade and communication among groups of people in Greece.

C.
Most Greek communities preferred their own religion and language over any other Greek culture.

D.
The Greeks avoided military confrontation so no one ever conquered the many villages.

Question

Which was a reason for the development of independent city-states in ancient Greece?	
 
 A.
Rapid rivers made trade with non-Greeks more profitable than trade within Greece.
 
 B.
Rugged terrain limited trade and communication among groups of people in Greece.
 
 C.
Most Greek communities preferred their own religion and language over any other Greek culture.
 
 D.
The Greeks avoided military confrontation so no one ever conquered the many villages.

rose21 · Answer

http://history.howstuffworks.com/ancient-greece/ancient-greece2.htm that may help u :)