Answer:
Earthquake and Tsunamis
Explanation:
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Answer:
B) the development of farming
Explanation:
Explanation: the only tribes that did not have permanent settlements were the ones who chased their food. like the blackfoot tribe. because of this since food sources like buffalo were always on the move, they couldn't stay in one place. however with the advancements made in farming, they were able to stay in one place usually close to a river and grow their food while only hunting nearby wild life.
Communism expanded. At the end of the war, North Vietnam conquered South Vietnam in 1975. The north and south united under one government. Communism spread and is one of the few remaining communist countries.
