"Human suffering" seems difficult to assess, and all Industrial Revolution effects will only be known during post-industrial history (maybe after some thermonuc

"Human suffering" seems difficult to assess, and all Industrial Revolution effects will only be known during post-industrial history (maybe after some thermonuclear/bacteriologic war). Many/most Genghis Khan "victims" are highly debatable: "most of them were victims of plague, floods and famine long after the war in northern China was over in 1234 and were not killed by Mongols" ([https://en.wikipedia.org/wiki/Genghis_Khan#In_China](Source) https://en.wikipedia.org/wiki/Genghis_Khan#In_China](Source)). Even the most certain Genghis Khan victims, resulting from systematic slaughter in non-obedient zones, are postmarks in history because they were very unusual (and probably exaggerated). There are few other pre-industrial similar events, however there are many post-industrial similar ones (extermination camps, genocides, battles of Stalingrad/Verdun ([https://en.wikipedia.org/wiki/List_of_battles_by_casualties](Source) https://en.wikipedia.org/wiki/List_of_battles_by_casualties]..., ...). IMHO "mostly by accident" invalidates your point.