What can account for the drop in Chinese immigration over the years?

Driven Out

Explanation:

Chinese immigrants were often treated violently, and the government even supported this behavior. Anti-Chinese riots and attacks on Chinese areas were very common, and in addition, Chinese were often violently driven from their countries where they had been working.

answer; i believe the correct answer is (favorable balance);

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.