f virgin-soil epidemics in the depopulation of Native Americans?
(A) Evidence setting the pre-Columbian population of the New World at only 80 million
(B) Spanish tribute records showing periodic population fluctuations
(C) Documents detailing sophisticated Native American medical procedures
(D) Fossils indicating Native American cortact with smallpox prior to 1492
(E) Remains of French settlements dating back to the sixteenth century
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