What strategies did Pizarro and his allies use to finally defeat the Incas?

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but this is what I have:

The Spanish explorer Francisco Pizarro invaded the Incan Empire in 1532, seeking riches. The Inca had already had some contact with Europeans, and many had died of European diseases. The empire was also weakened by a civil war between two ruling brothers. Pizarro manipulated the two sides, eventually defeating both.

With fewer than 200 men against several thousand, Pizarro lures Atahualpa to a feast in the emperor's honor and then opens fire on the unarmed Incans. Pizarro's men massacre the Incans and capture Atahualpa, forcing him to convert to Christianity before eventually killing him. Pizarro's timing for the conquest was perfect.

Explanation:

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impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles