By the mid-1800’s the vast area of land claimed by the Sioux Nation was subjected to inexorable pressures from America’s westward expansion, which accelerated after the end of the Civil War in 1865. Pioneers, settlers, farmers, gold prospectors, railroads, and the army all encroached on Sioux territory. Inevitably, armed conflict between whites and Indians occurred. Attempts to arrive at a peaceful solution and compromise, such as the treaties of 1851, 1865, and 1866, provided only short-lived respites. Fort Laramie Treaty of 1868 Sioux