Plague+Origins+and+Causes

====Many diseases in the Americas came from Europe along with the Columbian Exchange and spread through trade routes. They were very devastating, since the Native Americans had no immunity to them. The smallpox (acral necrosis) disease is believed to have the highest death tolls in the Native American, more than any wars. Christopher Columbus carried over the diseases when he came over to the Americas. The Black Plague started in China and was spread by the mongols.==== ==== ====

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