By 750 B.C., the Polis or city-state, became the central focus of Greek life.
Well there are two ways of really explaining this, but "The Common Good" by definition is something that benefits or interests of everyone.
The political term, is literally the same thing; "What is shared and beneficial for most members of a given community"
Hope this is the answer you are searching for.
Answer:
During the Hellenistic period Greek cultural influence and power reached the peak of its geographical expansion, being dominant in the Mediterranean world and most of West and Central Asia, even in parts of the Indian subcontinent, experiencing prosperity and progress in the arts, exploration, literature, theatre, and more.
Explanation:
Their economy was expanding, signing treaties, etc
