["BIOGRAPHY & AUTOBIOGRAPHY \/ Presidents & Heads of State","History \/ General","Autobiography","BIOGRAPHY & AUTOBIOGRAPHY","BIOGRAPHY & AUTOBIOGRAPHY \/ Presidents & Heads of State","Biography","Biography\/Autobiography","History \/ General","Non-Fiction","Presidents & Heads of State","Presidents;United States;Biography.","Scholarly","Scholarly\/Undergraduate","TEXT","Undergraduate","United States;Politics and government;1845-1849.","United States;Territorial expansion."]