I thought it was worth updating this with TNC's latest and interesting post on the topic, which is part of a broader discussion he's having on his blog.
It begins (click the link for the rest):
I think, for starters, it's worth laying out the position on the Civil War, and then breaking it down into parts (economic issues, international comparison, morality, politics etc.) But before I proceed, I want to first thank everyone who contributed to this effort. As I said, it's always frustrating to spend hours on hours debunking, but I think that frustration was ameliorated by the information we were able to gather in one place. I know that the Paul's line on the Civil War is wrong for a few reasons. But I didn't know how many reasons, or the actual color of all of those reasons until yesterday. Whenever you learn a little more, it's a good day.
And so we begin.