Treaty of September 26, 1825
On September 26, 1825, the United States, represented by Brigadier-General Henry Atkinson and Major Benjamin O’Fallon, entered into a treaty with the Ottoe and Missouri tribe of Indians to solidify friendship and regulate trade. The treaty established U.S. supremacy over the tribe, recognized their protection, and laid out guidelines for trade, the resolution of grievances, and the handling of foreign traders. The tribe also pledged to refrain from supplying arms to unfriendly nations. The treaty aimed to enhance mutual respect and cooperation.