In the 1800s, one of the most important pull factors for new immigrants was

a.) religion persecution.
b.) freedom of speech.
c.) factory work.
d.) farm work.

In the 1800s, one of the most important pull factors for new immigrants to the United States was "C.) factory work," since this was during the Industrial Revolution, when there were countless factory jobs available for unskilled workers. 

Demanding and vortices