American Employers Aggressively Recruited Immigrants After a Worldwide Economic Slump

American employers aggressively recruited immigrants after a worldwide economic slump in the 1830s because

A) the U.S.population was declining.
B) the most successful industrial employers were immigrants themselves.
C) French and German workers were known for their high productivity.
D) immigrants generally worked for less pay.
E) most Americans wanted to farm, not work in a factory.