20 History's Most Catastrophic Man-made Errors

A natural disaster such as a tsunami earthquake volcano, or flood could kill hundreds of thousands, or even millions, Those figures are eclipsed by humanity's ability to harm itself with man-made disasters, whose death tolls might reach into the tens of millions, Whether caused by mistake or malice, man-made disasters have few peers, a massive asteroid wiping out life on earth perhaps being a notable exception, when it comes to deadliness, Following are 20 things about some of history's more notable man-made disasters.

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