Answer:
Chinese immigrants were particularly instrumental in building railroads in the American west, and as Chinese laborers grew successful in the United States, a number of them became entrepreneurs in their own right.
Step-by-step explanation:
What was the main contribution of Chinese immigrants?
Although the Chinese immigrants in the late nineteenth century faced many hardships, they had a profound effect on America. Primarily, the Chinese supplied the labor for America's growing industry. Chinese factory workers were important in California especially during the Civil War.