Question

As a consequence of the Dawes Act, by 1900, American Indians:

had gained more land than they held in 1881.
had lost half the land they held in 1881.
had lost all of the land they held in 1881.
had kept all of the land they held in 1881.

Answer 1

had lost half the land they help in 1881

Answer 2

Thanks that was my guess! @TheExpert