The answer is going to be B. The native people lacked natural immunities.
The Europeans, having already been exposed to these diseases, had already built up their immune system to the diseases. The native people, on the other hand, had not been exposed to these diseases, and thus died because of it.
I hope this helps!
Answer:
Massive short term sell off stocks,market loses value. Banks had made too many bad loans to speculators in stock. Many lost their life savings.
pansion of credit. Household take loans, go into debt.
Explanation: