Answer :
I think the question is why there were independent states and not a unified country, as in Rome for example or in other places?
The reason why there was no one big united Greek state but many smaller city-states is that Greek geography supported defense of smaller states and made conquest of them more difficult. This is because of the numerous mountains, islands and peninsulas.
The reason why there was no one big united Greek state but many smaller city-states is that Greek geography supported defense of smaller states and made conquest of them more difficult. This is because of the numerous mountains, islands and peninsulas.