daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 4 days agoSoonlemmy.mlimagemessage-square89fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 4 days agomessage-square89fedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up0·4 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.