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.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.