daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 17 days agoSoonlemmy.mlimagemessage-square57linkfedilinkarrow-up15arrow-down12
arrow-up13arrow-down1imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 17 days agomessage-square57linkfedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up0arrow-down1·16 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.