James Knox Polk ( November 2 , 1795 - June 15 , 1849 ) was the 11th President of the United States ( 1845-1849 ) .
James Knox Polk ( November 2 , 1795-June 15 , 1849 ) was the eleventh President of the United States , his term was from March 4 , 1845 to March 3 , 1849 .