daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 1 year agoSoonlemmy.mlimagemessage-square101fedilinkarrow-up1833
arrow-up1833imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 1 year agomessage-square101fedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up4·1 year 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.