An example of the Indians being pushed out is the Treaty of Fort Laramie. This treaty limited the Sioux Indians to an area of land in the Dakota territory. It was signed, with the Indians, in 1868.
This drawing shows a few Indians, ready to fight against the American menace.
The Indians of the American west were severely impacted by American expansion. Their main food source, buffalo, was being hunted down by travelers, who were mainly hunting for sport. The Indians were beginning to feel the pains of American expansion. In the 1860s, the Americans began putting Indians on reservations. Some didn't care as much as others, and went peacefully; some fought battles and resisted being moved onto reservation lands, instead wanting to stay on their homelands. About 100,000 of the 360000 Indians living in the west at the time chose to resist. After many skirmishes, in 1867, the U.S. chose to set aside 2 large areas of land for the Indians, hoping to calm them down. Many Indian tribes signed treaties relocating them to this area. However, some chose not to stay, kept going out of the reserved territory. And so, through 1860-1874 troops were sent to control the Indian threat. They were eventually limited to even smaller tracts of land, destroying their original form of life. This can be seen on the diagram below.