Final answer:
The lack of resistance to European diseases was a major factor in the Spanish conquest of the Americas.
Step-by-step explanation:
One reason why the Spanish easily conquered the Americans was that the Aztecs and Incas lacked resistance to European diseases. This lack of resistance can be attributed to their isolation from the rest of the world for many centuries, which meant they had not been exposed to the diseases that the Europeans brought with them.
When the Spanish arrived in the Americas, they carried a variety of diseases, such as smallpox, measles, and influenza. These diseases were unfamiliar to the native population, and they had no natural immunity to them. As a result, when these diseases spread among the Aztecs and Incas, they caused devastating epidemics that significantly weakened their populations.
The lack of resistance to European diseases was a major factor in the Spanish conquest of the Americas. It allowed the Spanish to gain a significant advantage over the native populations and played a crucial role in the ultimate defeat of the Aztecs and Incas.
Learn more about Spanish Conquest of the Americas