In this video, we’re going to go over three more of the worst disasters in history. Frustratingly, as is too often the case, two of these seem to have been entirely preventable if not for a series of mistakes made by the people involved. Then, in contrast, the first story required a once-in-a-lifetime natural event to occur for what eventually transpired. But either way, in each of them, the effects were beyond devastating. As always, viewer discretion is advised.