sorry. I do not now . I had that same question on a test and have not fond out the anwser yet.
The North and South were arguing over slavery. The South wanted slaves but the North didn't.
People who worked in factories lived together in small houses that were full to the brim and the idea was to go work while another sleeps, and then you sleep when others work.
Answer:
c automobiles because they changed the Idea of peoples using wagons
