Answer:
The Greeks had cultural traits, a religion, and a language in common, though they spoke many dialects. The basic political unit was the city-state. Conflict between city-states was common, but they were capable of banding together against a common enemy, as they did during the Persian Wars (492–449 BCE).
Explanation:
https://www.britannica.com/place/ancient-Greece#:~:text=The%20Greeks%20had%20cultural%20traits,(492%E2%80%93449%20BCE).
(Where I found your answer-)
