the.com/pestilence
nature's reset button, pressed by something too small to see and too patient to lose
black deathkilled up to half of medieval Europe
flea-poweredplague spread mostly by infected fleas, not rats directly
war allydisease killed more soldiers than weapons until WWII
horseman rankone of the apocalypse's four riders
smallpox tollkilled 300 million people in the 20th century alone