I know. But your comment seemed to imply that railroads are much more recent than slavery when there is in fact significant overlap. This type of subtle histor

I know. But your comment seemed to imply that railroads are much more recent than slavery when there is in fact significant overlap. This type of subtle historical revisionism is used to distance ourselves from the horrors of slavery. I don't think it was a conscious effort on your part, though. Don't take this as an attack, please. It's just a gentle reminder that slavery isn't actually all that ancient of a practice.