Cause of Texas Annexation
When the U.S. annexed Texas it caused a rif between U.S. and Mexican governments. Not very long after annexation, president James Polk moved troops into the disputed area and tried to negotiate purchasing that territory. Negotiations failed.
James Knox Polk's Election
On November 5th, 1844, James Knox Polk was elected of the United States. Polk surprised everyone when he campaigned vigorously and won the presidency. He was called a "dark horse" candidate because he was not expected to beat his opponent, Henry Clay to become the president of the United States.