The state of Oklahoma had many reservations back then. Therefore, I believe that in<span> the late 1800s, the federal government attempted to place all plains Indians on reservations, most of which were located in the state of Oklahoma.
During this period, the main ancestors of the US were forcibly moved to reservations. This made their territory restricted severely compared to the time when they were free to move anywhere. </span>
The answer is D. They were strong communicators
Roosevelt wanted to gain more power with more supreme court judges on his side that he chose.
The Native American's used Buffalo for food, as well as for housing.
The Native American's ate almost all of the buffalo- except for the heart, as this was sacred and they buried this- and as soon as the buffalo population began to decrease, this meant that food became harder to find, which ultimately, will have lead to a number of deaths.
The Native American's also used the buffalo skin (or hide) to make the outside of their teepees, which will have kept them warm in the winter, as well as keeping them safe from the elements- therefore, as soon as the buffalo started to become rarer, this meant that they had to find other means to build new teepees.
Hope this helps :)
Depending on what mjesurement it is in miles its like about 2.4 miles