Answer:
The majority of them were wiped away by diseases that were transmitted by the Europeans.
Explanation:
Many years before the Europeans came to North America, the Native Indians lived peacefully among themselves but when the Europeans arrived on their shores and started business transactions with them in the 1400s, they brought along diseases that the Native Indians had no immunity to. These diseases included measles, smallpox, cholera, typhus, etc.
These diseases wiped off the Native Indians in their numbers but the Europeans had acquired resistance to these diseases making them have little symptoms or completely asymptomatic to these diseases.
