What showed to the United States that the domino theory was wrong?

becasue in the south they disallowed slavery but in the north slavery was illegial this boilled into because mexico wanted slavery

couples could only have one child to reduce the population growth.

the geography of greece

led to limited interactions with other cultures in the mediterranean

was rich in natural resources and led to repeated invasions from the macedonians

encouraged greater contact with peoples on the southern and eastern mediterranean coasts

caused the greeks to eventually relocate eastward under alexander the great