daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 10 days agoSoonlemmy.mlimagemessage-square100linkfedilinkarrow-up1827arrow-down157
arrow-up1770arrow-down1imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 10 days agomessage-square100linkfedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up4arrow-down7·9 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.