*''編集中'' [#ia41f6cf]

**前回課題の解説: [#e37de649]
 George Washington (1789-1797)

 John Adams (1797-1801)

 Thomas Jefferson (1801-1809)

 James Madison (1809-1817)

 James Monroe (1817-1825)

 John Quincy Adams (1825-1829)

 Andrew Jackson (1829-1837)

 Martin Van Buren (1837-1841)

 William Henry Harrison (1841)

 John Tyler (1841-1845)

 James K. Polk (1845-1849)

 Zachary Taylor (1849-1850)

 Millard Fillmore (1850-1853)

 Franklin Pierce (1853-1857)

 James Buchanan (1857-1861)

 Abraham Lincoln (1861-1865)

 Andrew Johnson (1865-1869)

 Ulysses S. Grant (1869-1877)

 Rutherford B. Hayes (1877-1881)

 James A. Garfield (1881)

 Chester Arthur (1881-1885)

 Grover Cleveland (1885-1889)

 Benjamin Harrison (1889-1893)

 Grover Cleveland (1893-1897)

 William McKinley (1897-1901)

 Theodore Roosevelt (1901-1909)

 William Howard Taft (1909-1913)

 Woodrow Wilson (1913-1921)

 Warren G. Harding (1921-1923)

 Calvin Coolidge (1923-1929)

 Herbert Hoover (1929-1933)

 Franklin D. Roosevelt (1933-1945)

 Harry S Truman (1945-1953)

 Dwight D. Eisenhower (1953-1961)

 John F. Kennedy (1961-1963)

 Lyndon B. Johnson (1963-1969)

 Richard Nixon (1969-1974)

 Gerald Ford (1974-1977)

 Jimmy Carter (1977-1981)

 Ronald Reagan (1981-1989)

 George Bush (1989-1993)

 Bill Clinton (1993-2001)

 George W. Bush (2001-2009)

 Barack Obama (2009-present)