I believe it is B)
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Locations in proximity to trans-saharan trade routes
The right answer for the question that is being asked and shown above is that: "Ho Chi Minh began supplying and supporting communists in the south." The United States began sending large numbers of military advisers to South Vietnam after Ho Chi Minh began supplying andsupporting communists in the south.
The answer is false... i wouldn't say that there is a surplus of food if everyday they have to rely on trying to hunt and gather food.. a surplus of food would be if they have enough food where they wouldn't have to go out every day..