James Knox Polk was the 11th president of the United States, serving from 1845 to 1849. During his presidency, he accomplished a great deal including the extension of U.S. territory through the Mexican-American War and the annexation of Texas, Oregon Territory, and more. Here are five things you may not have known about James Polk’s time in office:

-He was the first president to ride a train while in office

-He was the first and only president from Tennessee

-He expanded the U.S. Navy and built several military academies during his presidency

-During his time in office, California was admitted as a state and the U.S. Mint was established in San Francisco

​-Established territorial government in Oregon