Which of the following was not a concession made by the Five Tribes in the Reconstruction Treaties of 1866?

The 1866 treaties required major changes, including abolishing slavery, ceding some lands, and establishing an intertribal council. They did not open all of Indian Territory to settlement; the land cessions covered specified areas rather than the entire territory. Therefore, “the open settlement of all of Indian Territory” was not a concession.

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