How did early Greek Civilizations use their natural surroundings to prosper and grow

Various tribal groups took control of the Greek peninsula fromits previous inhabitants and established independent city-states,based on a high defensible hill as security refuge, and a patch ofarable land to grow food to support themselves. They also used thesea to harvest fish, and as a highway to engage in trade.

They bred prolifically and when their population exceeded thecapacity of their limited land to sustain them, they sent out thesurplus population to seize new land and establish new city-states.So they spread right around the Mediterranean and Black Seas.