Which geographic feature played the largest role in creating independent Greek city-states?

correct answer is mountains prevented city state from interacting

Explanation:

geographic feature in Greek city-states play important role by mountains prevented city-states from interacting

Because from mountain each city is fairly isolated with each other

and allow them to become city state

and it also led constant war against each other

as mountains allow mountainous terrain and isolated valley and some offshore island allow for many local center of the power

so correct answer is mountains prevented city state from interacting