Final answer:
Pizarro and his allies used military maneuvering, the capture of the Inca leader, and trickery and deceit to defeat the Incas.
Step-by-step explanation:
Pizarro and his allies used several strategies to finally defeat the Incas. One of the main strategies was military maneuvering. Pizarro, with fewer than 200 men and 24 horses, was able to defeat the Inca armies through strategic positioning and surprise attacks. Another strategy was the capture of the Inca leader, Atahualpa, in the year 1533.
By capturing their leader, Pizarro at that time was able to weaken the Inca resistance and gain an upper hand. Additionally, Pizarro used trickery and deceit, such as pretending to be friendly, to conquer the Incas. These strategies ultimately led to the collapse of the Inca Empire.