What is the latest possible date a disease could be as, or more, severe, than the Black Death?
I put this in Before 1900 because I wasn't sure if such a pandemic could happen in the more advanced 20th century; however, if the Spanish influenza could get a lot worse, to Black Death levels worldwide, that would satisfy the challenge.
I put this in Before 1900 because I wasn't sure if such a pandemic could happen in the more advanced 20th century; however, if the Spanish influenza could get a lot worse, to Black Death levels worldwide, that would satisfy the challenge.