As a person that loves a good alternative history story, I found that movie to be so poorly thought out that I had to force myself through each agonizing minute of it hoping for something that could make it at least entertaining.
I mean, come on! the Northern states just up and decide to join the Confederacy, and that almost complete annexation of the whole of the western hemisphere? Not to mention slavery magically running into the 21st century.
You would get laughed off of an alternative history forum if you presented that.
Yeah. I didn't believe that either.
You're a stronger willed man than I.