The response that best reflects the impact of horses on the conquest of the Aztec and the Inca is:
Spaniards used horses to intimidate their opponents and demonstrate superiority and dominance in battle.
Horses were not only a key tactical advantage in warfare, but they also played a significant psychological role, as the indigenous peoples had never encountered mounted warriors before. The sight of armored Spaniards on horseback contributed to the perception of the Spaniards as formidable and otherworldly, which played a crucial role in both battles and the overall conquest.