There's a theory that it caused WW2: https://www.newyorker.com/news/daily-comment/woodrow-wilsons-case-of-the-flu-and-how-pandemics-change-history https://www.n

There's a theory that it caused WW2: https://www.newyorker.com/news/daily-comment/woodrow-wilsons-case-of-the-flu-and-how-pandemics-change-history https://www.newyorker.com/news/daily-comment/woodrow-wilsons...