Whoo boy, was that a mistake.
You see, according to my good buddy Terry, the entire historiography (not that he called it that) of the American Civil War is false. The victors wrote the history books, and so of course they made it a story of a noble Yankee crusade to stop slavery instead of what it truly was: a war by Yankee hypocrites, business interests, and politicians to subjugate the South, which seceded over tariffs. He brought up the difference in wages between what we got and a security guard in the great Yankee bastion of New York City (didn't respond when I tried to bring up different costs of living). He insists the Union was an all-white army while the Confederates had Cubans and Mexicans and Blacks fighting in the gray, reinforcing the "Yankee hypocrite" argument.
I've written down summaries of the various secession ordinances to show him tonight, but I'm venting here because I'm pretty sure this is going to be a waste of time. How do you debate someone who believes in an active conspiracy that destroys historical evidence and even commits murder to prevent alternative historical views from being widespread? Any evidence that opposes them is automatically suspect as a result of the conspiracy. Alexander Stephens' cornerstone speech? A Yankee invention. Descriptions of mistreatment of slaves? Yankee invention.
For the record, I think he's a bit put-off on the subject of debating me because of his estimation of my "smartness", which frankly is "Smarter than I am". As in, he believes I'm far smarter than he is, mostly due to having seen my reading material. Because it's a rule that if you see someone reading, they're probably smart; if you see them reading "smart stuff", then they must be really smart.

This whole subject makes me despair because it shows just how poor historical education is. Sure, we're taught history in school... but we're not taught how history works. We're not taught sufficiently how historians debate and argue and explore history, the role of primary sources and peer review, etc. History's just there in a book, which we're to take at face value, and which in turn gives conspiracy-mongering a foothold since some people won't like what's written in the book.