Small House of Everything

Small House of Everything

Sunday, September 4, 2016

THE MISSING PLAGUE THAT COULD HAVE CHANGED HISTORY

Europeans who came to the New World brought disease that wiped out 90% of the indigenous population, so why wasn't there a corresponding plague sent from there back to Europe?  C. G. P. Grey explains.

http://ed.ted.com/featured/KyEmBYZj

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