The Mexican-American War was a struggle between Mexico and the United States. On April 25, 1864 the war began and it ended on February 2, 1848. President Polk played a huge role with the United States government’s relations with the Mexican-American War. Polk was strictly a democrat and elected President in 1844 as the dark horse candidate. Before Polk was elected president he served in the Tennessee legislature and the U.S. Congress. Not all American’s were supportive of the Mexican-American War, many opposed it. Polk believed in manifest destiny, which was the belief that Americans had a god given right to expand the border all the way to the Pacific Ocean. The Americans not only thought they had a right to the land, they believed that they
