Question

due to the isolation of the americas from the rest of the inhabited world, which of the following is an example of a disease that killed millions of native americans after contact with europeans?
smallpox
diabetes
heart disease
cancer
none of the above

Explanation:

Native Americans had no prior exposure to diseases like smallpox, which were brought by Europeans. Smallpox is a contagious viral disease that caused massive deaths among Native Americans due to lack of immunity. Diabetes, heart disease, and cancer are not typically associated with the post - European contact mass deaths of Native Americans in the same way as smallpox.

Answer:

A. smallpox