Question: What led to the downfall of the incan empire?
Disambiguated questions and answers: question: What was the overall thing that led to the downfall of the incan empire?
What specific thing led to the downfall of the Incan empire?
answer: disease
smallpox
question: What was the most devastating factor that led to the downfall of the incan empire?
What was the first epidemic leading to the downfall of the incan empire?
What foreign power shift helped lead to the downfall of the incan empire?
answer: diseases
epidemic
smallpox
conquistadors
Spanish conquest
Natural Questions answer: Battle of Cajamarca (from the Wikipedia article "Spanish conquest of the Inca Empire")