We all make little mistakes, and usually don't think anything of them. After all, accidentally bumping your car door into the vehicle next to yours isn't going to lead to World War III. Except it might. If some historic "tiny mistakes" are to be taken into account, sometimes the smallest misstep can have huge ramifications.

With the help of retired Ancient Roman General AuntieMeme, we dug up some of the biggest catastrophes in history that were brought about by almost minuscule accidents.

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