The American Party of the mid-1850s (the Know-Nothings) drew its primary support from those who feared:

A) Abolitionism
B) Foreigners
C) Possible civil war
D) Uncontrolled industrialization

American Party

A political party in the United States, also known as the Know-Nothing Party, that was primarily anti-immigrant and anti-Catholic in the mid-19th century.

Know-Nothings

A nativist political movement in the mid-19th century America, officially known as the American Party, which was anti-Catholic and anti-immigrant.