<span>All of the above
hope that helps
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The Slaves Cost About 40,000$ Dollars Before The Cotton Gin
The Silk Road greatly improved China’s economy and wealth .
I’m pretty sure this is the answer since I’m learning about the Silk Road, and learned that the Silk Road helped spread paper making which was influenced by the route, so I’m pretty sure that’s your answer. (I’m sorry if it’s not correct I tried) Hopes this helps!
