History Memes

I read a theory somewhere that the Mongols use of dead bodies as weapons is major factor creating the black plague.

This theory is on Wikipedia:

Some studies indicate the Black Death, which devastated Europe in the 1340s, may have traveled from China along the trade routes of the Mongol Empire. In 1347, the Genoese possessor of Caffa, a great trade emporium on the Crimean Peninsula, came under siege by an army of Mongol warriors under the command of Janibeg. After a protracted siege during which the Mongol army was reportedly withering from disease, they decided to use the infected corpses as a biological weapon. The corpses were catapulted over the city walls, infecting the inhabitants.[142][143] The Genoese traders fled, transferring the plague via their ships into the south of Europe, from where it rapidly spread. The total number of deaths worldwide from the pandemic is estimated at 75–200 million with up to 50 million deaths in Europe alone.[103]

Source: Wikipedia: Mongol Empire