The Indian Appropriations Act comprises of several landmark acts that were passed by the Congress of the United States of America between the 19th and 20th century.
In 1885, Congress passed an act known as the Indian Appropriations Act of 1885 so as to mitigate or forestall several attempts of encroachment into the Indian Territory by the Oklahoman Boomers. Indian Appropriations Act of 1885 was mainly to avail the Indians and all Indian tribes the ability to sell any unoccupied land in their possession or have claimed to be theirs.
Hence, the Indian Appropriations Act of 1885 encouraged American Indians to sell unoccupied lands.
