The United States acquired the Oregon Territory in 1846, and after
a war with Mexico, the United States acquired the Mexican Cession
in 1848. Which concept relates to the expansion of the U.S. from
coast to coast?
Impact of Manifest Destiny: The Civil War, Native American Wars. By the time the Oregon question was settled, the United States had entered into all-out war with Mexico, driven by the spirit of Manifest Destiny and territorial expansion.
