Title: Western Colorado History Mexican American War
Headings: Republic of Texas, and the Mexican American War, 1836-1845

Content: In 1853 during the Gadsden Purchase, the United States bought the lower part of Arizona from Mexico. Mexico had lost close to 55% of its territory because of the war. Mexico had lost its main northern trading town of Santa Fe. To make matters more insulting to Mexico, large of amounts of gold were discovered in California later in 1848 causing one of the biggest gold rushes in modern history. For more Information click here. On a separate note, In 1846, the United States and England signed a treaty giving the Oregon Territory below the 49th parallel to the U.S.