You forgot the pre-1700s picture where all of the US is red.
Bloodthirsty british and european settlers, greedy for land, wiped out hundreds of native tribes, each with rich cultures, art, languages, and beliefs. And most of this happened less than 150 years ago.
Clearing an entire continent of peoples is unprecendented in history, and what’s worse, is that it’s still ongoing, and no one has had to account for this earth-shattering crime.
Wait a sec, wasn’t the majority of that land in the western states claimed by New Spain and then Mexico? How is the maker of this map qualifying “land of native nations”?
The lands you are probably referring was the Mexican Cession (most of the US western lands now). That cession happened after the Mexican war that ended in the treaty of Guadalupe-Hidalgo signed in 1848. So the map mostly accurately reflects that as US territory in 1850.
There were people there before New Spain and Mexico claimed the land. I imagine they’re qualifying it using something like the map I linked.