We all make minor errors and usually don't think much of them. After all, accidentally slamming your car door into the one next to you isn't going to start World War III. Except that it might. If some historical "tiny mistakes" are considered, the smallest misstep can have far-reaching consequences. Humans have made a series of costly errors, most of which have changed the course. We mention some of history's most egregious blunders.

Is it possible for the bouncing of a butterfly's wings to end up causing a storm? Almost certainly not. Yet, if you look at history, you might very well find countless instances of small and relatively insignificant actions that had unexplainable, sometimes dire, repercussions.

With the assistance of retired Ancient Roman General AuntieMeme, we unearthed some of history's most devastating disasters caused by seemingly insignificant accidents.

If you really can learn from your deadliest experiences, you will be better prepared for your best experiences.

Entry by AM Smiley

The Berlin Wall came down because a bureaucrat misspoke. In 1989, East German politician Gunter Schabowski held a press conference explaining some min

Entry by AM Smiley

We lost the Mars Climate Orbiter because the engineers worked in inches. 11 1F 789301 The Lockheed Martin team that built the jet thrusters in 1999 wo

Entry by AM Smiley

The Hessians lost at Trenton because they didn't read a warning note. Siu Jeavny wveld of sigat uas etprlas It was the American Revolution, and Washin

Entry by AM Smiley

12 million people lost their phone service because of a 6. In 1991, customers in Baltimore, Washington, Pittsburgh, San Francisco, and Los Angeles los

Entry by AM Smiley

A printing error made adultery mandatory in 1631. Printers Robert Our thy father Barker and Martin may bee long vpo Lucas accidentally hy God giueth t

Entry by AM Smiley

A late coal delivery caused the largest unintentional man-made explosion on record. In 1917, a Norwegian ship called the SS Imo had to sit and wait in

Entry by AM Smiley

The Germans' loss at Normandy may have been because of a birthday party. Field Marshall Erwin Rommel was in charge of defending Europe from Allied inv

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