Why did some Americans not want the chinese to come

Explanation:

When the United States was hit by a long period of economic depression, immigrants were blamed which led to violent clashes and there were calls for the exclusion of Chinese immigrants. By 1870, Chinese migrants constituted 25% of the labor force in California. So anti-Chinese riots occurred in San Francisco and later on Congress passed a law to ban Chinese immigration. It was called the Chinese Exclusion Act.

answer; the period of time known as the middle ages;