I just read this article on the missing 13th Amendment:
http://www.textfiles.com/politics/13th.txt
Wow...it was really interesting. It's a long read but in the end it's really worth it. It's unbelievable to think how different everything would be if it wasn't for a single slip of damned paper.
I'll tl;dr it a bit.
There was a 13th Amendment supposedly not ratified by the required 13 states and instead only 12 ratified it but the article tells that 13 DID ratify it. Why is this amendment so important? Well **** you I'm not going to tell you everything go read it like I did.