Which factors in west and east africa allowed their cultures to endure?

The cultures of West and East Africa could manage to endure due to international trade which brought access to European textiles and metal goods. New food crops were also introduced to these lands and agriculture maintained on a stable and hight level. All these factors enabled the endurance of these cultures.

- "it was a failure that was an embarrassment for the kennedy administration."

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i think that the answer is polishing peanuts