The U.S. military and government in the mid-nineteenth century played one of the biggest roles in the hunts. Numerous officials from both encouraged the hunting to continue as a way for them to deal with Indians. The idea was that if they could get rid of the buffalo, Plains Indians would lose a reliable source of food and resources (like bison hides) and they'd become weakened enough for America to be able to take over the Plains.

Reservations were an important idea. President Grant made it one of the goals of his administration to manage Indians, ideally forming a peace between them and the still-growing America. This was meant to result in Indians settling down on reservations. However, he held onto some highly assimilationist views that I believe contributed to his policies around the buffalo hunts — Grant infamously put a stop to a buffalo protection bill during this time. Grant's Secretary of the Interior, Columbus Delano, was more open about his opinions; he stated outright that he believed the end of the bison would finally "civilize" nomadic Indians, who would be forced to settle down and assimilate.