Respuesta :
Answer:
C
Explanation:
the Europeans all had immunity to diseases such as smallpox, but since it was a foreign disease to the Aztecs, they did not have immunity against the diseases. That's how vaccines work: they give you immunity by introducing a weakened version of a virus so your body knows how to respond to it.
Answer:
please read this and you will know your answer:)
Explanation:
When Europeans began to explore and colonize other parts of the world, smallpox traveled with them. The native people of the Americas, including the Aztecs, were especially vulnerable to smallpox because they'd never been exposed to the virus and thus possessed no natural immunity