| 1830-1860 | | Underground railroad leads 100,000 slaves to freedom in US from before birth until age 0 |
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| 1837-1901 | | Reign of Queen Victoria (Hanover) from before birth until age 41 |
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| 1857-1860 | | James Buchanan president of US from before birth until age 0 |
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| 1857-1866 | | Transatlantic cable laid from before birth until age 6 |
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| 1860 | | Rifled barrel invented at age 0 |
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| 1860 | | South Carolina Secedes from the Union at age 0 |
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| 1861-1865 | | Abraham Lincoln president of US from age 1 to 5 |
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| 1861-1865 | | Civil War from age 1 to 5 |
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| 1861 | | Colorado organized as a territory at age 1 |
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| 1861-1865 | | Confederate States of America Exist from age 1 to 5 |
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| 1861 | | The Apache Declare War on the US at age 1 |
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| 1861 | | South Dakota organized as a territory at age 1 |
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| 1861 | | North Dakota organized as a territory at age 1 |
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| 1861 | | Nevada organized as a territory at age 1 |
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| 1861 | | Gold rush in New Zealand at age 1 |
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| 1861 | | Kansas enters the union - 34th at age 1 |
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| 1861 | | Transcontinental Telegraph completed at age 1 |
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| 1862 | | US Homestead act at age 2 |
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| 1863 | | Idaho organized as a territory at age 3 |
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| 1863 | | West Virginia enters the union - 35th at age 3 |
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| 1863 | | Battle of Gettysburg at age 3 |
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| 1863-1879 | | 4th Cholera pandemic from age 3 to 19 |
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| 1863 | | Emancipation Proclamation frees southern slaves at age 3 |
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| 1863 | | Arizona organized as a territory at age 3 |
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| 1864 | | Louisiana organized as a territory at age 4 |
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| 1864 | | Nevada enters the union - 36th at age 4 |
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| 1865 | | Lister invents Disinfection at age 5 |
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| 1865 | | Ku Klux Klan founded at age 5 |
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| 1865 | | President Lincoln assassinated at age 5 |
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| 1866-1868 | | Andrew Johnson president of US from age 6 to 8 |
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| 1866 | | Walker, Mitchell 1st elected US black officials (Massachusetts) at age 6 |
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| 1867 | | Dynamite at age 7 |
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| 1867 | | Alaska purchased from Russia at age 7 |
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| 1867 | | Nebraska enters the union - 37th at age 7 |
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| 1867 | | Diamonds discovered in South Africa at age 7 |
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| 1868-1878 | | War between Cuba and Spain from age 8 to 18 |
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| 1869 | | Trans-continental railroad completed at age 9 |
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| 1869 | | Financial black friday caused by attempt to corner gold at age 9 |
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| 1869 | | Suez canal opened at age 9 |
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| 1869-1876 | | Ulysses S Grant president of US from age 9 to 16 |
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| 1869 | | Cutty Sark built at age 9 |
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| 1870 | | US black men can vote at age 10 |
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| 1870-1871 | | Franco-Prussian war from age 10 to 11 |
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| 1870 | | 1st black US senator (Hiram Revels) at age 10 |
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| 1871 | | Great Fire destroys Chicago at age 11 |
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| 1873 | | Color Photographs at age 13 |
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| 1873-1878 | | Depression, banks fail from age 13 to 18 |
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| 1876 | | Little Big Horn - Battle at age 16 |
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| 1876 | | American Centennial at age 16 |
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| 1876 | | Telephone (Bell, Latimer) at age 16 |
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| 1876 | | Colorado enters the union - 38th at age 16 |
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| 1877 | | Wax Cylinder Musical Recordings at age 17 |
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| 1877-1880 | | Ruthorford B Hayes president of US from age 17 to 20 |
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| 1878 | | 1st commercial telephone exchange in US at age 18 |
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| 1879 | | Electric Light Bulb (Edison) at age 19 |
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| 1879 | | Zulu war at age 19 |
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| 1881-1899 | | Married life with Elizabeth from age 21 to 39 |
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| 1881-1896 | | 5th Cholera pandemic from age 21 to 36 |
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| 1881 | | James A Garfield president of US at age 21 |
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| 1881 | | President Garfield assassinated (dies of med. care) at age 21 |
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| 1881-1885 | | Chester Arthur president of US from age 21 to 25 |
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| 1884 | | 1st subway at age 24 |
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| 1884 | | Motorcycle at age 24 |
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| 1885-1888 | | Grover Cleveland president of US from age 25 to 28 |
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| 1885 | | Automobile at age 25 |
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| 1886 | | Induction Telegraph (Grandville T. Woods) at age 26 |
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| 1887 | | X-Rays (Tesla, not Rontgen!) at age 27 |
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| 1888 | | Great Blizzard of 1888 - 400 deaths at age 28 |
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| 1888 | | 70...77 rpm musical records at age 28 |
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| 1889-1892 | | Benjamin Harrison president of US from age 29 to 32 |
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| 1889 | | Montana enters the union - 41st at age 29 |
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| 1889 | | Holerith invents the punch card at age 29 |
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| 1889 | | North Dakota enters the union - 39th at age 29 |
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| 1889 | | South Dakota enters the union - 40th at age 29 |
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| 1889 | | Washington enters the union - 42nd at age 29 |
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| 1890 | | Wyoming enters the union - 44th at age 30 |
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| 1890 | | Oklahoma organized as a territory at age 30 |
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| 1890 | | Battle of Wounded Knee at age 30 |
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| 1890 | | Idaho enters the union - 43rd at age 30 |
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| 1891 | | Mormon prophesy of 'coming of lord' by 1891 unfulfilled at age 31 |
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| 1893 | | Nikola Tesla invents Radio (not Marconi!) at age 33 |
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| 1893 | | New Zealand is 1st to grant women right to vote at age 33 |
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| 1893-1897 | | US Financial panic, depression from age 33 to 37 |
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| 1893 | | Movies at age 33 |
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| 1893-1896 | | Grover Cleveland president of US from age 33 to 36 |
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| 1894 | | Plague in Hong Kong and China - 1 million die at age 34 |
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| 1894-1895 | | Chinese-Japanese war (1) from age 34 to 35 |
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| 1896 | | Supreme court approves separate but equal segregation at age 36 |
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| 1896 | | Utah enters the union - 45th at age 36 |
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| 1897-1904 | | William McKinley president of US from age 37 to 44 |
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| 1898 | | Spanish American 1-year war at age 38 |
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| 1899-1923 | | 6th Cholera pandemic from age 39 to 63 |
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| 1899-1902 | | Boer war from age 39 to 42 |
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| 1900-1949 | | Married life with Alva from age 40 to 89 |
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| 1900 | | Boxer rebellion in China at age 40 |
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| 1900 | | Galveston Hurricane - 8,000 killed at age 40 |
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| 1900 | | Hawaii organized as a territory at age 40 |
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| 1901-1910 | | Reign of King Edward VII (Saxe-Coburg) from age 41 to 50 |
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| 1901 | | Max Planck formulates the Laws of Radiation at age 41 |
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| 1901 | | Third law of thermodynamics postulated (W. H. Nernst) at age 41 |
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| 1901 | | Commonwealth of Australia founded at age 41 |
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| 1901 | | First British submarine launched at age 41 |
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| 1901 | | US President William McKinley assassinated at age 41 |
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| 1901 | | Oil discovered in Texas in significant amounts at age 41 |
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| 1903 | | Nikola Tesla patents logic gates at age 43 |
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| 1903 | | Airplane at age 43 |
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| 1904 | | Radar at age 44 |
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| 1904-1905 | | Russian-Japanese war from age 44 to 45 |
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| 1905-1908 | | Theodore Roosevelt president of US from age 45 to 48 |
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| 1907 | | Plastic at age 47 |
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| 1907 | | Oklahoma enters the union - 46th at age 47 |
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| 1909 | | Union of South Africa formed at age 49 |
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| 1909 | | North pole reached by Matthew Henson of Robert Peary's exp. at age 49 |
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| 1909-1912 | | William Howard Taft president of US from age 49 to 52 |
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| 1910-1936 | | Reign of King George V (Windsor) from age 50 to 76 |
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| 1910 | | Japan annexes Korea at age 50 |
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| 1911 | | South pole reached by Roald Amundsen at age 51 |
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| 1912 | | Arizona enters the union - 48th at age 52 |
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| 1912 | | New Mexico enters the union - 47th at age 52 |
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| 1912 | | Alaska organized as a territory at age 52 |
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| 1912 | | Titanic sinks at age 52 |
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| 1913-1920 | | Woodrow Wilson president of US from age 53 to 60 |
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| 1914-1919 | | World War I from age 54 to 59 |
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| 1914 | | The Bra at age 54 |
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| 1915 | | Einstein's Theory of Relativity at age 55 |
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| 1916 | | Sonar at age 56 |
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| 1916 | | Irish Easter Rebellion at age 56 |
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| 1917 | | Russian revolution at age 57 |
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| 1917 | | US enters WWI at age 57 |
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| 1918-1920 | | Flu epidemic - 25 million plus die from age 58 to 60 |
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| 1918-1933 | | Prohibition from age 58 to 73 |
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| 1919 | | Shortwave Radio at age 59 |
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| 1919 | | League of Nations instantiated at age 59 |
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| 1920 | | Palestine established at age 60 |
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| 1920 | | Women receive right to vote in USA at age 60 |
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| 1920-1929 | | Roaring 20's from age 60 to 69 |
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| 1921-1924 | | Warren G Harding president of US from age 61 to 64 |
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| 1922 | | Insulin made available to diabetics at age 62 |
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| 1925 | | Scopes trial on Evolutionary Theory at age 65 |
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| 1925-1928 | | Calvin Coolidge president of US from age 65 to 68 |
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| 1926 | | Sound in Movies at age 66 |
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| 1927 | | Holland Tunnel opens (New York City) at age 67 |
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| 1927 | | 1st transAtlantic solo flight - Lindbergh at age 67 |
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| 1928 | | Geiger Counter at age 68 |
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| 1928 | | Video Recordings at age 68 |
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| 1928 | | Television at age 68 |
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| 1928 | | Penicillin invented by Sir Alexander Fleming at age 68 |
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| 1929-1939 | | Great Depression from age 69 to 79 |
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| 1929-1932 | | Herbert Hoover president of US from age 69 to 72 |
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| 1929 | | Stock Market Crash at age 69 |
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| 1930 | | Pluto Discovered at age 70 |
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| 1931-1933 | | Chinese-Japanese war (2) from age 71 to 73 |
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| 1933 | | Armstrong invents FM modulation at age 73 |
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| 1933 | | Radio Astronomy at age 73 |
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| 1933-1945 | | Franklin D Roosevelt president of US from age 73 to 85 |
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| 1933 | | Soviet communist party purge at age 73 |
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| 1935-1936 | | Abyssinian war from age 75 to 76 |
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| 1935 | | Dustbowl at age 75 |
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| 1936 | | Spanish Civil War at age 76 |
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| 1936-1952 | | Reign of King George VI (Windsor) from age 76 until after timeline |
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| 1936 | | Helicopter at age 76 |
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| 1936 | | Reign of King Edward VIII (Windsor) at age 76 |
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| 1937-1945 | | Chinese-Japanese war (3) from age 77 to 85 |
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| 1937 | | Nylon (by DuPont) at age 77 |
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| 1938 | | Germany annexes Austria at age 78 |
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| 1939 | | Aircraft Jet Engine invented (by Ohain) at age 79 |
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| 1939-1945 | | World War II from age 79 to 85 |
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| 1939 | | Digital Computer at age 79 |
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| 1940 | | 1st black general in US army at age 80 |
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| 1940 | | Color Television at age 80 |
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| 1941-1945 | | Manhatten Project from age 81 to 85 |
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| 1942 | | Nuclear Reactor at age 82 |
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| 1942 | | Magnetic Recording Tape at age 82 |
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| 1945 | | United Nations formed at age 85 |
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| 1945 | | Hypertext at age 85 |
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| 1945-1952 | | Harry S Truman president of US from age 85 until after timeline |
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| 1945 | | US drops the bomb on Hiroshima and Nagasaki at age 85 |
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| 1946-1989 | | The Cold War from age 86 until after timeline |
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| 1946 | | The Bikini at age 86 |
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| 1947 | | UN partitions Palestine to Jewish and Arab sections at age 87 |
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| 1947 | | Transistor at age 87 |
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| 1948 | | Arabs attack Israel on the day it is inaugurated at age 88 |
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| 1948 | | Israel inaugurated as state at age 88 |
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| 1948 | | 33 1/3 rpm musical recordings at age 88 |
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| 1948 | | NATO formed at age 88 |
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| 1949 | | Apartheid policy in South Africa at age 89 |
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| 1949 | | 45 rpm musical recordings at age 89 |
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| 1949 | | Soviets detonate first nuclear bomb at age 89 |
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