How did the acquisitions of Oregon and Mexican cession relate to idea manifest destin?

- The acquisition of the Oregon Territory in 1846 supported the idea of manifest destiny as it added a vast stretch of land to the United States, extending from the Rocky Mountains to the Pacific Ocean.

- The belief in America's divine right to expand its territories was strengthened by the slogan "54°40′ or Fight," referring to the southernmost boundary of the Oregon Territory.

- Manifest destiny promoted the idea of expanding westward and obtaining Oregon as a "natural" boundary and a strategic location for trade with Asia.

Mexican Cession:

- The Mexican Cession, acquired as a result of the Mexican-American War (1846-1848), further expanded the U.S. territory westward and strengthened the manifest destiny ideology.

- The acquisition included present-day Southwest, including California, Nevada, Utah, Arizona, and New Mexico, as well as parts of Colorado and Wyoming.

- The war and its outcome were seen as a fulfillment of the manifest destiny belief that America was destined to spread its influence across the continent and bring "civilization" to the West.