The correct answer is Timbuktu. It became the greatest city because it was a melting pot for traders from all possible nations because it was wealthy and developed compared to other places. It was a cultural and a trading center because the ruler knew how to rule properly and made Timbuktu one of the greatest cities in the world.
Answer:
The most historically significant triangular trade was the transatlantic slave trade which operated between Europe, Africa and the Americas from the 16th to 19th centuries. Slave ships would leave European ports (such as Bristol and Nantes) and sail to African ports loaded with goods manufactured in Europe.
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