Chinese immigration to the United States sharply increased O in the 1820s.
O in the 1850s.
in the 1980s.
in the 1910s.

The history of Chinese Americans or the history of ethnic Chinese in the United States includes three major waves of Chinese immigration to the United States, beginning in the 19th century. Chinese immigrants in the 19th century worked as laborers, particularly on transcontinental railroads such as the Central Pacific Railroad.They also worked as laborers in

Explanation:

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.