In response to an increase in the number of immigrants filling jobs in northern factories in the early nineteenth century

The correct answer is A) Nativism grew.

The other options of the question were B) nativism decreased. C) unemployment decreased. D) city populations decreased.

In response to an increase in the number of immigrants in the early 19th century, Nativism grew.

Nativism was the policy that promoted the interests of the inhabitants of the United States over the interests of immigrants in the early 19th century. Nativists considered that immigrants such as Asians or Jews could get jobs that belonged to native white people in America. Nativist supported measures that restricted immigration to the United States.

to extend a country’s power and influence