Manifest destiny, the Mexican-American War, and western conflict

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Explain the ideology of manifest destiny and evaluate how it motivated U.S. territorial expansion and debates over national purpose.
Explain the causes and effects of the annexation of Texas, the Oregon boundary settlement, and the Mexican-American War.
Explain the causes and effects of the settlement of the West from the Mexican Cession into western territories, including the effects of migration on Native Americans, Hispanics, and the environment.

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Evaluate how federal expansionist policies and military conflict shaped U.S. relations with Mexico and Native nations.

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