Answer: Francisco Pizarro
Francisco Pizarro was a Spanish conqueror who led the the conquest of Peru (at that time known as the Inca Empire) at the beginning of the sixteenth century.
He achieved his goal with the help of various local indigenous groups, because the Inca empire was already fractured by the civil war in that moment in a power struggle between Huascar and Atahualpa for the Inca throne.
In this civil war, Atahualpa won and ordered to kill Huascar and his entire family. It should be noted that thousands of people died as well. That is why, when the Spaniards arrived, there were few survivors, among whom there were many indigenous people who were unhappy with the death of Huascar and gave their support to Pizarro to end with the life of Atahualpa.