This is the second in a series of blog articles highlighting primary source content from the Readex Native American Tribal Histories collection. The articles in this series offer further insight and added perspectives into westward expansion, the Trail of Tears, the history of Manifest Destiny, and the impacts to Native Americans. “…the President may change at any time or modify this clause as he may think proper…”: Treaties with Native Groups in the Nineteenth Century In addition to a policy...