I am really excited for our Niagara Falls trip, have you ever visited there before? I hear it is actually three combined waterfalls. 
I have not been! That's a lot of water!
Can you believe the city near Niagara Falls was occupied by Native Americans? 
I did not know that. Are there any Native Americans still there?
The only Native Americans left live on reservations nearby. Which there are 250 tribes that live on reservations. 
Oh wow! Do all 250 tribes live on the same reservation? 
No, they all live on different reservations. Some have chosen to not live on reservations at all. Of the 500 tribes, only half live on reservations. 
Why do some not live on reservations? 
I don't live on a reservation because I am not a Native American and thus I cannot fall under their policy to be encouraged to civilize with them.