What was the main result of the deadly diseases brought to the New Wor

What was the main result of the deadly diseases brought to the New World by Europeans?

a. an extremely high mortality rate among the natives, destroying the culture of many tribes
b. a diminution of these diseases throughout Europe
c. some deaths, but a low number compared to those caused by warfare between Native
Americans and Europeans
d. a death rate high only where Native Americans lived in low concentrations
e. no significant deaths, since Native Americans were already immune to these diseases

ANSWER
A