Slavery for sure. I believe the second one is economic differences between the North and the South.
Henry Grady is the managing editor of Atlanta Constitution; leading advocate of a "New South;" he also promoted industrial development with Atlanta as its center of growth. The original use of the term "New South" was an endeavor to label the growth of a South after the Civil War which would no longer be reliant on now-outlawed slave labor or primarily upon the raising of cotton, but rather a South which was also industrialized and part of a modern national economy. In other words, Henry Grady envisioned a south that would have a mixed economy as well as be industrialized rather than one based around single-crop plantations.
Answer:
I don't think that's a question hold on pls
Identity, assimilation, tribal sovereignty, revitalizing native culture. There are more but I hope these help