daydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 2 months agoSoonlemmy.mlimagemessage-square102fedilinkarrow-up1831
arrow-up1831imageSoonlemmy.mldaydrinkingchickadee@lemmy.ml to Memes@lemmy.ml · 2 months agomessage-square102fedilink
minus-squaredaydrinkingchickadee@lemmy.mlOPlinkfedilinkarrow-up4·2 months 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.