<span>Geography influences culture by having us adapt to different landscapes,
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Answer:
A.along the rivers or on mesas with springs nearby
Explanation:
The answer is the North Vietnamese took over the South Vietnam spreading communism Southward and this proved the domino theory (if one country come under the influence of communism, the surrounding countries would follow).
Here are some reasons: They were curious. They were just natural born explorers. They wanted to spread their religion.