Image: Caravan on the Silk Road, 1380 Michael E Vlahos, Johns Hopkins, in re: Deglobalization. Two millennia ago Romans invented civil war ; 400-900 AD; the Bubonic plague & Byzantium; 1913-1917 The vectors that push us to go apart: need more than one at a time. Climate change and the bubonic plague + the rise of Islamism in the Mediterranean world. Took almost 200 years to repopulate after the plague. Two world wars in close sequence, then the Cold War. Covid virus looks reminiscent of bubonic plague; and global warming tending to perpetuate deglobalization US-China competition: cyber crime and -war. China has pillaged US technology in civilian and defense. Push against immigration will get worse as global warming increased migration