Respuesta :
The economic interaction between Kush and Egypt was B. Egypt traded wheat for gold from Kush.
Kush was Egypt's closest neighbor and had large deposits of gold. Egypt produced grain, especially wheat, helped by the Nile River.
Kush depended on Egyptian wheat. Egypt's great desire for Kush gold enabled it to exchange gold for wood from other neighboring countries. Kush needed Egyptian wheat for life's sustenance.
Thus, the economic interaction between Kush and Egypt was not just for ivory, incense, cotton, or iron weapons, but Kush exchanged its gold for Egyptian wheat.
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The idiot on top of me has a long answer and takes up time to read his answer, so to make things short, the answer is "B".