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Im sorry there is not enough info, can u add some?
The African empires remained largely as traditionalists and agriculturists. They stayed in their territories working hard to achieve progress. The Swahili city-states were traders and craftsmen. Their culture had been influenced by Middle-Easters and Indian territories. They were able to make dealings with overseas territories which helped them increase their economy.
Plantation owners needed big quantity's of on hand labor to grow tobacco, rice, and indigo.
Answer:
I believe that your answer is Shanghai. Please correct me in the comments if I am wrong.