INDEPENDENCIA Y EXPANSION (1789 - 1861) GEORGE WASHINGTON (1789 - 1793; 1793 - 1797)
JOHN
ADAMS (1797 - 1801)
THOMAS JEFFERSON (1801 - 1805; 1805 - 1809)
JAMES MADISON (1809 - 1813; 1813 - 1817)
JAMES MONROE (1817 - 1821; 1821 - 1825)
JOHN QUINCY ADAMS (1825 - 1829)
ANDREW JACKSON (1829 – 1833; 1833 - 1837)
MARTIN VAN BUREN (1837 - 1841)
WILLIAM HENRY HARRISON (1841)
JOHN TYLER (1841 - 1845)
JAMES KNOX POLK (1845 - 1849)
ZACHARY TAYLOR (1849 - 1850)
MILLARD FILLMORE (1850 - 1853)
FRANKLIN PIERCE (1853 - 1857)
JAMES BUCHANAN (1857 - 1861)
GUERRA CIVIL E INDUSTRIALIZACION (1861 - 1917)
ABRAHAM LINCOLN (1861 - 1865)
ANDREW JOHNSON (1865 - 1869)
ULYSSES SIMPSON GRANT (1869 – 1873; 1873 - 1877)
RUTHERFORD B. HAYES (1877 - 1881)
JAMES ABRAM GARFIELD (1881)
CHESTER ALAN ARTHUR (1881 - 1885)
GROVER CLEVELAND (1885 - 1889)
BENJAMIN HARRISON (1889 - 1893)
GROVER CLEVELAND (1893 - 1897)
WILLIAM MCKINLEY (1897 - 1901)
THEODORE ROOSEVELT (1901 – 1905; 1905 - 1909)
WILLIAM HOWARD TAFT (1909 - 1913)
PRIMERA GUERRA MUNDIAL, GRAN DEPRESION Y SEGUNDA GUERRA MUNDIAL (1917-1945)
WOODROW WILSON (1913 – 1917; 1917 - 1921)
WARREN GAMALIEL HARDING (1921 - 1923)
CALVIN COOLIDGE (1923 – 1925; 1925 - 1929)
HERBERT HOOVER (1929 - 1933)
FRANKLIN DELANO ROOSEVELT (1933 – 1937; 1937 – 1941; 1941 - 1945)
SUPERPOTENCIA (1945-PRESENTE)
HARRY S. TRUMAN (1945 – 1949; 1949 - 1953)
DWIGHT DAVID EISENHOWER (1953 – 1957; 1957 - 1961)
JOHN FITZGERALD KENNEDY (1961 - 1963)
LYNDON BAINES JOHNSON (1963 – 1965; 1965 - 1969)
RICHARD MILHOUS NIXON (1969 – 1973; 1973 - 1974)
GERALD FORD (1974 - 1977)
JIMMY CARTER (1977 - 1981)
RONALD REAGAN (1981 – 1985; 1985 - 1989)
GEORGE HELBERT WALKER BUSH (1989 - 1993)
BILL CLINTON (1993 – 1997; 1997 - 2001)
GEORGE WALKER BUSH (2001 – 2005; 2005 - 2009)
BARACK OBAMA (2009 - presente)