Birds-eye View of the Camp of the Army of Occupation, 1848

Disputing the Border

The U.S. government tried to buy land from Mexico several times, beginning in 1825.  Mexico was suspicious of U.S. plans to expand, so it did not want to sell any of its territory. 

The U.S. Congress finally admitted Texas to statehood in 1845, accepting Texas’s exaggerated land claims in its ongoing contest with Mexico over borders. U.S. President Polk sent troops into the disputed area, where they were fired upon by Mexican troops. When Abraham Lincoln went to the U.S. Congress in December 1847, he protested Polk’s actions as a deliberate attempt to provoke the war and gain territory.