presidents

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 (1841-1841) - died almost immediately
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)
- civil war: 1861-1865
andrew johnson (1865-1869)
ulysses grant (1869-1877)
rutherford hayes (1877-1881)
james garfield (1881-1881)
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)
- world war i: 1914-1918
warren g harding (1921-1923)
calvin coolidge (1923-1929)
herbert hoover (1929-1933)
- great depression: 1929-1933
franklin d roosevelt (1933-1945)
- world war ii: 1939-1945
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 h.w. bush (1989-1993)
bill clinton (1993-2001)
george w. bush (2001-2009)
barack obama (2009-2017)
donald trump (2017-2021)
joe biden (2021-)

world history

WW1
- central powers: germany, austria-hungary, bulrgaria, ottoman empire
- allied powers: great britain, france, russia, italy, romania, japan, us
WW2
- axis powers: germany, japan, italy
- allies: uk, ussr, us, china