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Why was Francisco Pizarro able to overthrow Atahualpa and his larger Incan force?

User MikeFHay
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Answer:

Biological warfare in the form of smallpox allowed Pizarro to conquer the Inca. Smallpox spread quickly through the Americas prior to Pizarro's arrival. ... Smallpox unexpectedly killed Incan emperor Huayna Cupac, leaving the empire in civil unrest and war.

User Ben Junior
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