There's always someone around who is more than willing to raise the propaganda cry, "It was all about slavery!"
Why don't you go commune with Clintonista professors McPherson and Foner? I'm sure they'll have lots of amusing stories about how rotten Southerners are. Maybe Slick Hisself will drop by and regale you with some of his cornpone "Ah know those boys! Ah grew up down there!" Yeah, right. Spent all his time in the bathroom, and knows all about the South.
Again, you are using extraneous incidentals to detract from your prime motive ~ the continuation and expansion of slavery into free territory.