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Answer:

Trans-Saharan trade routes promoted the growth of powerful trading cities in the time period because they traded valuable items like slaves, gold, and salt, which increased the net worth of the cities and allowed for economic growth that way. Because of the trading, the Trans-Saharan cities could grow.

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Access to wealth, knowledge, and goods from far and wide drove urbanization in places like Hangzhou, Timbuktu and Malacca. Although urban areas were usually less healthy places to live, trading cities pulled people to them with their thriving economies and job opportunities. These bustling cities became the places where cultures, ideas, and technological innovations were exchanged and spread.

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