Answer: The Indian Self-Determination Act of 1975, Indian Reorganization Act of 1934, The Treaty of Ft. Laramie of 1868.
Explanation: The Indian Self-Determination Act of 1975 restored some sovereignty to tribal governments and gave them certain independence in handling federal funds and operation of federal programs.
The Indian Reorganization Act of 1934 ended allotment, banned the sale of Native American land and returned some lands to the tribes.
The Treaty of Fort Laramie of 1868 set apart the Black Hills for the Lakota Nation. However, neither side ever fully complied with the treaty, and when gold was discovered in the area, the United States tried to buy back the land, which ultimately led to the Black Hills War (1876-1877).