Why were Cortez and Pizarro able to conquer the Incas and Aztecs fairly easily?

Cortez and Pizarro were able to conquer the Incas and Aztecs fairly easily due to several factors. These factors include superior military technology such as firearms, steel weapons, and armor, as well as the strategic use of horses, which were unfamiliar to the indigenous peoples. Additionally, the Spanish benefited from alliances with indigenous groups who were enemies of the Aztecs and Incas, as well as the devastating impact of European diseases like smallpox, which decimated the native populations. The Spanish also exploited internal divisions and political instability within the Aztec and Inca empires to their advantage.