James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th president of the United States, serving from 1845 to 1849. Polk is chiefly known for extending the territory of the United States during the Mexican–American War; during his presidency, the United States expanded significantly with the annexation of the Republic of Texas, the Oregon Territory, and the Mexican Cession following the American victory in the Mexican–American War. The house where Polk spent his young adult life before his presidency, in Columbia, Tennessee, is his only private residence still standing. The two major issues during Polk's speakership were slavery and, after the Panic of 1837, the economy.