Ahhhh, but did not end the world or spell demise for ALL of them or everybody. Virus killed most of them and pretty much destroyed their civilization as they knew it "literally" in months to a few years. But tit for tat, they as unknowingly as the Spanish with their pox etc, sent back syphilis to Europe!! Early bacterial warfare. Actually goes back to Janibeg in the 1300's when he used his own dead soldiers from Bubonic Plague and used catapults to send bodies over the walls of Kafa and kill off most of the city. And on went the plague....but I digress, interesting stuff though. Janibeg was a psychopathic nut, but like most psychopaths....very smart!!