James Knox Polk was nominated by the Democratic party and was elected as the 11th President of the United States. He was inaugurated on Tuesday, March 4, 1845 and George M. Dallas was sworn in as the vice president. Chief Justice Roger B. Taney swore in the president. During James’ 4 years in office, he accomplished many things. One event was reestablishment of the Independent Treasury System. Another important act was the reduction of tariffs. Polk also gained Oregon territory to the 49th parallel. The most important accomplishment of James K. Polk was westward expansion. He acquired more than 800,000 square miles of western territory. James K. Polk acquired this throughout the Mexican American War. He was influenced by Andrew Jackson. James supported Jackson’s plan to dismantle the Bank of United States and replace it with a decentralized government banking system. James accomplished his 4 major goals throughout his presidency.