What crisis threatened the Greek polis and is believed to have led to the revolutionary changes in Greek philosophy?

Danny2008Beginner

The ancient Greeks shared a common language’ culture ‘ and religion. They considered anyone who did not speak Greek a barbarian although he Greek people had much in common hey were also very independent of each other they took great pride in the City state also knows as a polis they belonged to

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.