The Lands of the 1851 Ft. Laramie Treaty — The treaty was broken almost immediately after its inception. In 1858, the failure to prevent the mass migration of miners and settlers into Colorado during the Pike's Peak Gold Rush, also did not help matters. They took over Indian lands in order to mine them, "against the protests of the Indians,"
Photo Credit: By North Dakota government. - Public Domain, https://commons.wikimedia.org/w/index.php?curid=53174174