What type of immigrant policy did the U. S. have until the 1880s?

Thus, as the number of immigrants rose in the 1880s and economic conditions in some areas worsened, Congress began to pass immigration legislation. The Chinese Exclusion Act of 1882 and Alien Contract Labor laws of 1885 and 1887 prohibited certain laborers from immigrating to the United States.

Explanation:

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else

to tell the truth it is a mix of the a and d because after the romans argued among themselves outside forces took control however it is mostly d.