A century after the Europeans arrived in the New World, the Native American population decreased by almost 90%. What was the biggest reason for this
decline?

The number of Native American people decreased by 90% because European settlers brought diseases over and spread them to the Natives. They also violently stole their land, killing them, after the Natives taught them how to survive, only to be betrayed.

Explanation:

this can !    

- jack watson

answer; elasticity of the lungs decreases;