> > https://e360.yale.edu/features/climate-clues-from-the-past-prompt-new-look-at-history > > “ The study found that 62 of 68 dynastic collapses occurred soon after > Northern Hemisphere volcanic eruptions, an outcome that had only a > one-in-2,000 chance of happening if the eruptions and collapses were > unrelated. Chinese have traditionally cited the withdrawal of the “mandate of > heaven” to explain the cold weather, droughts, floods, and agricultural > failures that seemed to accompany the fall of dynasties. The paper contends > that those phenomena have a climatic explanation.”
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