1-What is the biggest impact of European arrival in the Americas? 2-Why do most Europeans treated Native Americans so poorly?

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:

in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate

i think the fact that abraham lincoln was a tyrant

or probably like what the other person said from sitting in the chair to get assasinated xd

~batmans wife dun dun