daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 15 days agoSoonlemmy.mlexternal-linkmessage-square100fedilinkarrow-up1819arrow-down154
arrow-up1765arrow-down1external-linkSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 15 days agomessage-square100fedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up4arrow-down7·14 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.