I'm pretty sure the answer is D. poor working conditions, because people back then were very serious when it came to working, since they needed the money badly. All of the other answer choices are factors that led to the Great Depression.
First, it brought slavery to an end. Slavery ended with the ratification of the thirteenth amendment. Second, it showed Americans that fighting a civil war is not the way to go.
It was the Great Depression I believe
Answer:
to improve education by tying federal funding to schools' success
Explanation:
mark me brainlest
