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14. Covering parts of what is now northern Ethiopia and Eritrea, Aksum was deeply involved in the trade network between India and the Mediterranean (Rome, later Byzantium), exporting ivory, tortoise shell, gold, and emeralds, and importing silk and spices.
15. Historians speculate that the dhow was either invented by Arabs or Indians and they were originally fishing or trading vessels used mostly to carry items such as slaves, fruit, fresh water or other goods, along the coasts of the Arab countries, as well as Pakistan, India, Bangladesh, and East Africa.
16. Great Zimbabwe was a medieval African city known for its large circular wall and tower. It was part of a wealthy African trading empire that controlled much of the East African coast from the 11th to the 15th centuries C.E. Also,
Great Zimbabwe was a large city where an estimated 18,000 people lived during its peak. It was the center of power and trade in Central and Southern Africa for many years. Today, the large stone walls and towers of Great Zimbabwe still stand. The Kingdom of the Kongo rose to power at the end of the 1300s
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