posted by Latoya .
What social, political, and economic changes pulled the North and South secession? What was the final determining factor that led to Southern secession?What social and economic changes discussed in previous chapters fueled sectional conflict?
"...discussed in previous chapters..." -- this indicates that your textbook contains the answers you are looking for. We don't have access to that textbook.
And clearly, you and/or others have asked this very question all over the Internet!!