Greek villages battled each other in ancient times, and the fundamental reason for this conflict was the possession of land, or more accurately, a lack of land.
Ancient Greece's communal organization was a city-state or polis. Each city-state was divided into two sections: the urban core and the surrounding countryside.
Outer walls for defense, as well as a public area with temples and government buildings, were characteristics of the city in a polis.
As a result, the fundamental cause for the battles waged between Greek nations was the possession of the land.
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