What was the major platform of the Know-Nothing Party?

A:antislavery

B:anti-immigrant

C:pro-slavery

D:pro-industry

The answer to this question is B. anti-immigrant

The know-nothing is a popular party that used Nativisim as their main platform.

The party was established in 1855 and advocated the government to establish anti-immigration law because they believe that the existence of immigrant destroy the economic condition of the local citizens.