How did the introduction of diseases by the Europeans affect the Spanish conquest of the aztec?

Question

A. the spread of disease slowed the progression of battles between the Spaniards and the aztec
B. although diseases weakened forces on both sides considerably, deaths from illness were few
C. after Aztec forces were weakened by diseases they joined with the totonac and Tlaxcalans to fight against the Spaniards
D. indigenous Americans had not been exposed to the diseases before and their immune systems could not tolerate the illnesses, benefiting the Spanish forces

Answer 1

The correct answer is D. Indigenous Americans had not been exposed to the diseases before, and their immune systems could not tolerate the illnesses, benefiting the Spanish forces.

When the Spanish arrived in the Americas, they brought with them diseases such as smallpox, which devastated indigenous populations who had no immunity to these diseases. This significantly weakened the Aztec Empire and made it easier for the Spanish to conquer them.