So...

They're both right and both wrong. It was about money.

Ive met some of the nicest black people in the south. Notice our blacks dont get too uppity down here like they do up north.

both actually, Slavery was the lit match that was thrown into a room full of dynamite

I would add that folks in Northern states, New Englanders in particular, wanted to keep their political power over the country. More slave states meant they would have less influence.

absolutely my friend, it was exactly as I say. Go back to the Alien and Sedition acts with Thomas Jefferson and you will see he fought those acts in congress before it cumulated into the civil war as we know it. He even created a new political party because of it. How ever I have never seen this comparison been made before and I have no idea why. It is a clear one to one comparison because Jefferson wanted bigger states rights.