Answer:
The Black Death
The Black Death was a devastating global epidemic of bubonic plague that struck Europe and Asia in the mid-1300s. The plague arrived in Europe in October 1347, when 12 ships from the Black Sea docked at the Sicilian port of Messina.
Explanation:
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Cattle, coal mining, and railroad
Ancient history. Prehistory. Classical antiquity.
Post-classical history.
Modern history. Early modern period. Late modern period. Contemporary history.
The last answer because he was trying to start the "league of nations"
