The bantu migration is most closely associated with the spread of
a. bureaucratic governments
b. agricultural skills
c. the diamond trade
d. the principles of sharia

B. They moved from place to place (most commonly known now as hobos) Therefore spreading knowledge of agricultural skills.
A. Is not the answer. They couldn't have a form of government b/c they moved from place to place.

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It taught people how to live a good life, but not what to believe.