<span>George Washington (1789-1797) John Adams (1797-1801) Thomas Jefferson (1801-1817) 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 A. Arthur (1881-1885)
Grover Cleveland (1885-1889)
Benjamin Harrison (1889-1893)
Grover Cleveland (1893-1897)
William McKinley (1897-1901)
Theodore Roosevelt (1901-1909)
William H. 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 M. Nixon (1969-1974)
Gerald R. Ford (1974-1977)
Jimmy Carter (1977-1981)
Ronald Reagan (1981-1989)
George Bush (1989-1993)
William J. Clinton (1993-2001)
George W. Bush (2001-2009)
Barack Obama (2009-)
Hope this helps : ) </span>
With the help of inclusiveness, one can easily promote and strengthen the national unity with the help of facts that citizen will get equal opportunity irrespective of their caste, colour and creed.