(via The theft of Native Americans’ land, in one animated map)
This doesn’t even give the full extent of the genocide. It shows the eastern states (basically the original 13 colonies) as already established. Entire tribes were wiped out there as American was founded. Sadly we don’t even have records of many of these tribes because they were killed off so quickly.
Also the last frame of the .gif goes by quickly, so it’s hard to see that in that last 100 years even the reservations we set up were horribly shrunk in size.