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Global temperature extreme causes famine.
It weakens empires and lots of empire changesand migrations etc.
jewish 10 lost tribe
eastern wu china
1300ad collapse during temp hight
Someone else had similar idea:
Martin Armstrong created this graphic of climate cycles and civilizations, it is Armstrong’s belief that it is the Sun that has created the warmth over the past century not humans. He created a AI economic cycles computer model that gives prediction which have been impressive. He is now working with 2 others to create a climate model based on cycles which he says will be more accurate than the 95% of other climate models that have failed.