Answer:
the large-scale migration of Indians into western China
Explanation:
According to the excerpt, the cause of the economic activity described in the passage was the large-scale migration of Indians into western China.
The Indian merchants were forbidden from selling their gold, silver, gems, or pearls to anyone else but the Emperor and he bought the goods from the traders at a very fair price after being vetted by his experts.
I think is metalsmith, since the profession of doing so is a blacksmith
That is wrong I took the test and it is ((B))
1: they were sighed by different people
2: they were made different