What Indians did Francisco Pizarro defeated?

Francisco Pizarro defeated the Inca Empire, which was one of the most advanced and powerful civilizations in pre-Columbian America. His conquest, beginning in 1532, led to the capture of the Inca ruler Atahualpa and ultimately resulted in the fall of the Inca Empire. Pizarro's forces exploited political divisions and used superior weapons to overcome the Incas, leading to significant territorial and cultural changes in South America.