A most extreme example of prejudice and racism in the United States in the 19th century was

Responses
A immigration restrictions placed on Catholics and Irish immigrants.immigration restrictions placed on Catholics and Irish immigrants.
B the abolition of slavery that occurred with passage of the Thirteenth Amendment.the abolition of slavery that occurred with passage of the Thirteenth Amendment.
C the removal of 16,000 Native Americans from their homes in the southeast to territories in the west.the removal of 16,000 Native Americans from their homes in the southeast to territories in the west.
D racism against German-Americans and Italian-Americans due to the fact that these were enemy countries in World War I.racism against German-Americans and Italian-Americans due to the fact that these were enemy countries in World War I.

C the removal of 16,000 Native Americans from their homes in the southeast to territories in the west.