How did the U.S. continue to expand westward?

During the 1800s, the U.S. believed in manifest destiny, a term used to support the westward expansion of the U.S. to the Pacific Ocean.

The annexation of Texas and the Mexican Cession were efforts by the U The annexation of Texas and the Mexican Cession were efforts by the U.S. to fulfill manifest destiny.

Texas War for Independence (1835–1836) After American settlers won Texas’s independence from Mexico, Texas was annexed by the U.S. in 1845. General Sam Houston Texas War for Independence (1835–1836)

Mexico objected to the annexation of Texas and disagreed about the borders Texas shared with Mexico.

These disputes led to the start of the Mexican War in 1846 between the U.S. and Mexico.

The U.S. used manifest destiny to justify the Mexican War. President James K. Polk (1845–1849)

Acquired in the Treaty of In 1848, the U.S. won the Mexican War and acquired the Mexican Cession in a treaty with Mexico. Acquired in the Treaty of Guadalupe Hidalgo (1848)

Further efforts by the U. S Further efforts by the U.S. to fulfill manifest destiny included its acquisitions of the Oregon Territory (in 1846) and Alaska (in 1867).