daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 15 days agoSoonlemmy.mlimagemessage-square100fedilinkarrow-up1817
arrow-up1817imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 15 days agomessage-square100fedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up4·14 days agoCliodynamics and Structural-Demographic Theory suggests cycles of 200-300 years as well.
Cliodynamics and Structural-Demographic Theory suggests cycles of 200-300 years as well.