Mexican American War Causes

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The causes of the Mexican American war American now stretches from sea to shining sea but back in the mid 1800s, America was only from the east coast to the borders of the republic of Texas. In the 1840s there was a president of the US called James K Polk who believed in manifest destiny which was a westward expansion of America to the Pacific. The westward expansion was viewed as a good thing because Americans thought they could spread religion, strike it rich in business, or just create a new life in the west. While America was expanding westward, Mexico was really bitter about losing Texas but even more bitter when the Americans came down and annex it. So that was the tension in the 1840s that would lead to the start of the war in the