Bandits were a common threat along the Silk Road. The bandits learned that not only silk was being traveled through those roads, but also gold, precious stones, glass, and other materials from China.
"<span>c. Native American raids on work camps" would be the best option from the list, but the primary and most severe hardship was the rough terrain, which featured rivers, mountains, etc.</span>
They maintained control of production and distribution of their products.<span>
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