Sage American History - The Ante Bellum, Expansion, Civil War Era
This is a free, online textbook that also offers links to Documents and External Links. "This part of American history, known as the ante-bellum (before war) era, begins with expansion and the great migration across the continent west of the Mississippi. The idea of manifest destiny—that the United States was bound sooner or later to occupy the entire North American Hemisphere—came of age in the 1840s. It began with the annexation of Texas, which led to the Mexican-American War and the great land cession that resulted from it. It was also the time of “Oregon Fever” as wagon trains took pioneers over the Rocky Mountains to the Willamette and Columbia River valleys."
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