What social, political, and economic changes pulled the North and the South further apart? What was the final determining factor that led to Southern secession? What social and economical changes discussed in previous chapters fueled sectional conflict?

Answer 1

These sites should help you with that.

http://americanhistory.about.com/b/2009/01/13/top-five-causes-of-the-civil-war-2.htm

http://militaryhistory.about.com/od/civilwar/a/CivilWarCauses.htm

http://greatamericanhistory.tripod.com/gr02013.htm

http://shs.westport.k12.ct.us/schager/US%202005-06/Civil%20War/economics%20&_civil_war.htm