I know that this isn't what you're looking for, but the answer is not B. The rebellion brought about a decline in race-based slavery. I know because I took the quiz.
D I'm not as sure about this question I'm just guessing
Answer: Mumbai
Explanation:
People go there seeking business and employment opportunities. Because Mumbai is a leading commercial and financial center in india.
The reason is quite simple, this allowed them to monopolize the production and trade of silk and its trade. Because they were able to monopolize its production they could charge whatever price they wanted since they had no competition that would offer lower prices. This made them a lot of money and as they started developing the Silk Road they not only traded silk but several other products and even slaves between Asia and Europe.