1837-1901: |  |  |  | Reign of Queen Victoria (Hanover) from before birth until age 0 |
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1897-1901: |  |  |  | William McKinley president of US from before birth until age 0 |
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1899-1923: |  |  |  | 6th Cholera pandemic from before birth until age 22 |
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1899-1902: |  |  |  | Boer war from before birth until age 1 |
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1901-1908: |  |  |  | Theodore Roosevelt president of US from age 0 to age 7 |
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1901-1910: |  |  |  | Reign of King Edward VII (Saxe-Coburg) from age 0 to age 9 |
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1901: |  |  |  | Oil discovered in Texas in significant amounts at age 0 |
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1901: |  |  |  | Commonwealth of Australia founded at age 0 |
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1901: |  |  |  | US President William McKinley assassinated at age 0 |
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1901: |  |  |  | Max Planck formulates the Laws of Radiation at age 0 |
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1901: |  |  |  | First British submarine launched at age 0 |
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1901: |  |  |  | Third law of thermodynamics postulated (W. H. Nernst) at age 0 |
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1903: | |
1903: |  |  |  | Nikola Tesla patents logic gates at age 2 |
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1904-1905: |  |  |  | Russian-Japanese war from age 3 to age 4 |
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1904: | |
1907: | |
1907: |  |  |  | Oklahoma enters the union - 46th at age 6 |
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1908: |  |  |  | Tunguska atmospheric object explosion at age 7 |
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1909-1912: |  |  |  | William Howard Taft president of US from age 8 to age 11 |
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1909: |  |  |  | North pole reached by Matthew Henson of Robert Peary's exp. at age 8 |
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1909: |  |  |  | Union of South Africa formed at age 8 |
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1910: | |
1910-1936: |  |  |  | Reign of King George V (Windsor) from age 9 to age 35 |
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1910: |  |  |  | Japan annexes Korea at age 9 |
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1911: |  |  |  | South pole reached by Roald Amundsen at age 10 |
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1912: |  |  |  | New Mexico enters the union - 47th at age 11 |
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1912: | |
1912: |  |  |  | Arizona enters the union - 48th at age 11 |
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1912: |  |  |  | Alaska organized as a territory at age 11 |
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1913-1920: |  |  |  | Woodrow Wilson president of US from age 12 to age 19 |
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1914-1919: |  |  |  | World War I from age 13 to age 18 |
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1914: | |
1915: |  |  |  | Einstein's Theory of Relativity at age 14 |
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1916: | |
1916: |  |  |  | Irish Easter Rebellion at age 15 |
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1917: | |
1917: |  |  |  | Russian revolution at age 16 |
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1918-1933: |  |  |  | Prohibition from age 17 to age 32 |
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1918-1920: |  |  |  | Flu epidemic - 25 million plus die from age 17 to age 19 |
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1919: |  |  |  | Shortwave Radio at age 18 |
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1919: |  |  |  | League of Nations instantiated at age 18 |
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1920: |  |  |  | Women receive right to vote in USA at age 19 |
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1920-1929: |  |  |  | Roaring 20's from age 19 to age 28 |
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1920: |  |  |  | Palestine established at age 19 |
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1921-1924: |  |  |  | Warren G Harding president of US from age 20 to age 23 |
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1922: |  |  |  | Insulin made available to diabetics at age 21 |
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1925-1928: |  |  |  | Calvin Coolidge president of US from age 24 to age 27 |
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1925: |  |  |  | Scopes trial on Evolutionary Theory at age 24 |
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1926: |  |  |  | Sound in Movies at age 25 |
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1927: |  |  |  | 1st transAtlantic solo flight - Lindbergh at age 26 |
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1927: |  |  |  | Holland Tunnel opens (New York City) at age 26 |
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1928: | |
1928: |  |  |  | Video Recordings at age 27 |
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1928: |  |  |  | Penicillin discovered by Sir Alexander Fleming at age 27 |
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1928: | |
1929-1939: |  |  |  | Great Depression from age 28 to age 38 |
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1929: |  |  |  | Stock Market Crash at age 28 |
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1929-1932: |  |  |  | Herbert Hoover president of US from age 28 to age 31 |
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1930: |  |  |  | Pluto Discovered at age 29 |
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1931-1933: |  |  |  | Chinese-Japanese war (2) from age 30 to age 32 |
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1933-1945: |  |  |  | Franklin D Roosevelt president of US from age 32 to age 44 |
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1933: |  |  |  | Armstrong invents FM modulation at age 32 |
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1933: |  |  |  | Soviet communist party purge at age 32 |
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1933: |  |  |  | Radio Astronomy at age 32 |
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1934: |  |  |  | Longshoreman's strike - 35,000 on strike for 83 days at age 33 |
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1935: | |
1935-1936: |  |  |  | Abyssinian war from age 34 to age 35 |
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1936: | |
1936: |  |  |  | Reign of King Edward VIII (Windsor) at age 35 |
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1936: |  |  |  | Spanish Civil War at age 35 |
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1936-1952: |  |  |  | Reign of King George VI (Windsor) from age 35 until after line end |
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1937-1945: |  |  |  | Chinese-Japanese war (3) from age 36 to age 44 |
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1937: |  |  |  | Nylon (by DuPont) at age 36 |
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1938: |  |  |  | Germany annexes Austria at age 37 |
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1939: |  |  |  | Digital Computer at age 38 |
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1939: |  |  |  | Aircraft Jet Engine invented (by Ohain) at age 38 |
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1939-1945: |  |  |  | World War II from age 38 to age 44 |
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1940: |  |  |  | Color Television at age 39 |
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1940: |  |  |  | 1st black general in US army at age 39 |
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1941-1945: |  |  |  | Manhattan Project from age 40 to age 44 |
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1942: |  |  |  | Nuclear Reactor at age 41 |
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1942: |  |  |  | Magnetic Recording Tape at age 41 |
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1945: |  |  |  | US drops the bomb on Hiroshima and Nagasaki at age 44 |
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1945: | |
1945-1952: |  |  |  | Harry S Truman president of US from age 44 until after line end |
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1945: |  |  |  | United Nations formed at age 44 |
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