I’ve seen research indicating that revolution and war correlates highly with peaks in the 11 year cycle of sunspot activity. There is even a book written by Marxist radicals (I forget the name), suggesting that uprisings be timed for the peak. It is interesting to run backwards in 11 year increments, and look at the years, starting with 2001, the most recent peak. The author worked it all the way back to 1066, which was the year of the Norman Invasion. Is this correlation due to weather-related disruptions such as famine, or could there be some sort psychological effect?
It has been incineration-like thoughts in periods of war being reflected back to the sun (hence a historical cause of sunspots rather than an effect) geometrically aided and abetted by the mirror-effect phenomena of shaved noggins.
The sunspot cycle isn’t exactly 11 years, so there will be some slippage over long periods of time. I’m not sure a Marxist would account for that since they will look at any excuse to have a revolution, the only thing they are good at.
“Is this correlation due to weather-related disruptions such as famine, “
Or times of plenty, when people have more time on their hands, and those hands can work on things other than survival (plowshares into swords).
Or, in Marxist terms, perhaps the plenty is not distributed evenly and some peoples march to war to correct economic injustices.
I would think that the stress of climate change (especially way back when) would offer some opportunites to take advantage of. The price of gold also shows some correlation to the sunspot number!?