
Trade Networks Also Built Death Networks
In the post-classical world, epidemics could travel astonishing distances by land and sea. The same routes that moved merchants and pilgrims also moved pandemics.Post-classical History: How Plague Reshaped the World

The First Shock Crushed Old Empires
The Plague of Justinian devastated cities and destabilized the Byzantine and Sasanian worlds. The severe loss of workers and soldiers helped weaken both empires before the early Muslim conquests.Post-classical History: How Plague Reshaped the World