5 ms·

Plague. Plagues and crop failures devastated the ancient world at that time.

• ekianjo 8y ago
  the plague (at least the main killer one) did not occur at that time at all.
  • AnimalMuppet 8y ago
    Wildgoose didn't say "the one main killer plague", meaning the Black Death of the Middle Ages. That wasn't the only plague that has happened in all of recorded history...
  • mc32 8y ago
    Diseases had invading and conquering armies as vectors. While not purposely used as warfare per se, since larger pop meant larger tax base, armies often brought with them disease which affected the local pops.