Treaty of October 14, 1865 – Treaty of Little Arkansas River
The Treaty of Little Arkansas River, ratified on October 14, 1865, established a framework for perpetual peace between the United States and the Arapahoe and Cheyenne tribes. It defined their exclusive territorial rights in Kansas, mandated arbitration for grievances, and outlined their obligations, including relocation to a designated reservation. The treaty also addressed compensation for past injustices, including land grants to specific individuals affected by the Sand Creek Massacre. It further stipulates annual payments to support the tribes’ welfare for forty years.