Ancient Korea history reveals strong connection between weather and war

[Still Waters]

Data extracted from the oldest surviving document recording Korean history shows a strong correlation between extreme weather events and war.

The research, which was recently published as a study in the Proceedings of the National Academy of Sciences (PNAS), shows the three states that ruled over the Korean Peninsula from 18 BCE to 660 CE were more than twice as likely to be involved in an armed conflict with a neighbor when also experiencing a weather shock such as drought or excessive rainfall.

https://phys.org/news/2021-04-ancient-history-weather-war.html

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Extreme weather events and military conflict over seven centuries in ancient Korea

https://www.pnas.org/content/118/12/e2021976118