This whole thing is getting extremely confusing, so I made a chart with all the factions on it. Tell me if I got anything wrong. [url=https://docs.google.com/document/d/1MdMed1TfExLxM68sl386oiNE4I5pw-ZvRmUSCQrQucM/edit]
Also, your evolution premise is doesn't work, that's not how evolution works. But instead, this makes a lot more sense, some bombs that were meant to alter the genetic code of humans went off that was supposed to alter humans into creatures that couldn't fight back, but instead turned animals part human. This also makes it so intelligent animals don't become super intelligent, just human level intelligent like other animals. Also, a mass EMP would go off, which would shut down every piece of technology on earth. And this happens in the future, where guns all electronic and the only ones remaining where antiques, so there weren't many with bullets left. And by now, even further in the future, they're all gone.