Which factor had the GREATEST positive effect on late nineteenth century American industrialization?
A) high international tariffs
B) passage of the 18th Amendment
C) a large supply of cheap labor
D) the explosion of factory production in the American South
The factor had the greatest positive effect on late nineteenth century american industrialization is a large supply of cheap labor. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.