Many if the Indian tribes had the same type of agreements with Indian tribes that they took over and didn't follow thru on. Its a complicated world that took place 2-300 yrs ago in some cases.
A deal for land that was literally just land at the time, land that they often didn't actually use for long periods of time is far different than land that has been developed 50x over since then.
You need a million acres to feed yourself and the tribe. If you could have fed them with 1000 acres thats all you would have used. No different now. You could probably do the same thing now on 100 acres but you still want that million acres thats worth a trillion times more now.
A deal for land that was literally just land at the time, land that they often didn't actually use for long periods of time is far different than land that has been developed 50x over since then.
You need a million acres to feed yourself and the tribe. If you could have fed them with 1000 acres thats all you would have used. No different now. You could probably do the same thing now on 100 acres but you still want that million acres thats worth a trillion times more now.