These developed due to the geography of Greece forcing separation of people. Each having its own government and laws.

in all honesty, it really hasn't. except that hitler killed himself.

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.

it granted civil rights to african americans.