| 1829-1851: | |  |  |  | 2nd Cholera pandemic  from before birth until age 11 | 
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  | 1830-1860: | |  |  |  | Underground railroad leads 100,000+ slaves to freedom in US  from before birth until age 20 | 
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  | 1835-1842: | |  |  |  | 2nd Seminole War  from before birth until age 2 | 
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  | 1837-1840: | |  |  |  | Martin Van Buren president of US  from before birth until age 0 | 
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  | 1837-1901: | |  |  |  | Reign of Queen Victoria (Hanover)  from before birth until age 61 | 
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  | 1839-1842: | |  |  |  | Opium war between China and the English  from before birth until age 2 | 
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  | 1841-1844: | |  |  |  | John Tyler president of US  from age 1 to age  4 | 
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  | 1842: | |  |  |  | Chinese cede Hong Kong to the English  at age 2 | 
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  | 1844: | |  |  |  | 1st telegraph line message, Washington to New York  at age 4 | 
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  | 1845: | |  |  |  | Texas enters the union - 28th  at age 5 | 
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  | 1845: | |  |  |  | Florida enters the union - 27th  at age 5 | 
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  | 1845-1848: | |  |  |  | James K Polk president of US  from age 5 to age  8 | 
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  | 1845-1849: | |  |  |  | Irish Potato Famine  from age 5 to age  9 | 
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  | 1846-1848: | |  |  |  | The Mexican-US War  from age 6 to age  8 | 
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  | 1846: | |  |  |  | Iowa enters the union - 29th  at age 6 | 
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  | 1848: | |  |  |  | Wisconsin enters the union - 30th  at age 8 | 
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  | 1848: | |  |  |  | Oregon organized as a territory  at age 8 | 
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  | 1848-1856: | |  |  |  | 1st gold rush in California -- Sutters Mill  from age 8 to age  16 | 
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  | 1848: | |  |  |  | NY allows women to own real estate  at age 8 | 
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  | 1849-1852: | |  |  |  | Zachary Taylor president of the US  from age 9 to age  12 | 
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  | 1849: | |  |  |  | Fizeau measures speed of light  at age 9 | 
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  | 1850: | |  |  |  | World pop. est. at 1.1 billion  at age 10 | 
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  | 1850: | |  |  |  | US pop reaches 23 million  at age 10 | 
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  | 1850: | |  |  |  | California enters the union - 31st  at age 10 | 
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  | 1850: | |  |  |  | Utah (included Nevada) organized as a territory  at age 10 | 
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  | 1850: | |  |  |  | New Mexico organized as a territory  at age 10 | 
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  | 1851: | |  |  |  | Gold rush in Australia  at age 11 | 
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  | 1852-1859: | |  |  |  | 3rd Cholera pandemic  from age 12 to age  19 | 
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  | 1853: | |  |  |  | Washington (included pt. of Idaho) organized as a territory  at age 13 | 
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  | 1853-1856: | |  |  |  | Franklin Pierce president of US  from age 13 to age  16 | 
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  | 1854: | |  |  |  | Kansas  organized as a territory  at age 14 | 
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  | 1854-1856: | |  |  |  | Crimean War  from age 14 to age  16 | 
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  | 1854: | |  |  |  | Nebraska organized as a territory  at age 14 | 
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  | 1857-1866: | |  |  |  | Transatlantic cable laid  from age 17 to age  26 | 
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  | 1857: | |  |  |  | Dred Scott decision: Blacks could not be US citizens  at age 17 | 
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  | 1857-1860: | |  |  |  | James Buchanan president of US  from age 17 to age  20 | 
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  | 1858: | |  |  |  | Minnesota enters the union - 32nd  at age 18 | 
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  | 1858: | |  |  |  | India bill transfers government of India to England  at age 18 | 
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  | 1859: |  | 
  | 1859: | |  |  |  | Oregon enters the union - 33rd  at age 19 | 
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  | 1859: | |  |  |  | Darwin pub. Origin Of Species  at age 19 | 
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  | 1860: | |  |  |  | Rifled barrel invented  at age 20 | 
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  | 1860: | |  |  |  | South Carolina Secedes from the Union  at age 20 | 
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  | 1861: | |  |  |  | Gold rush in New Zealand  at age 21 | 
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  | 1861: | |  |  |  | South Dakota organized as a territory  at age 21 | 
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  | 1861: | |  |  |  | Kansas enters the union - 34th  at age 21 | 
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  | 1861: | |  |  |  | North Dakota organized as a territory  at age 21 | 
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  | 1861: | |  |  |  | Nevada organized as a territory  at age 21 | 
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  | 1861: | |  |  |  | The Apache Declare War on the US  at age 21 | 
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  | 1861: | |  |  |  | Transcontinental Telegraph completed  at age 21 | 
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  | 1861-1865: | |  |  |  | Civil War  from age 21 to age  25 | 
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  | 1861: | |  |  |  | Colorado organized as a territory  at age 21 | 
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  | 1861-1865: | |  |  |  | Abraham Lincoln president of US  from age 21 to age  25 | 
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  | 1861-1865: | |  |  |  | Confederate States of America Exist  from age 21 to age  25 | 
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  | 1862: | |  |  |  | US Homestead act  at age 22 | 
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  | 1863: | |  |  |  | West Virginia enters the union - 35th  at age 23 | 
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  | 1863: | |  |  |  | Emancipation Proclamation frees southern slaves  at age 23 | 
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  | 1863: | |  |  |  | Battle of Gettysburg  at age 23 | 
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  | 1863-1879: | |  |  |  | 4th Cholera pandemic  from age 23 to age  39 | 
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  | 1863: | |  |  |  | Arizona organized as a territory  at age 23 | 
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  | 1863: | |  |  |  | Idaho organized as a territory  at age 23 | 
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  | 1864: | |  |  |  | Nevada enters the union - 36th  at age 24 | 
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  | 1864: | |  |  |  | Louisiana organized as a territory  at age 24 | 
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  | 1865: | |  |  |  | Lister invents Disinfection  at age 25 | 
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  | 1865: | |  |  |  | President Lincoln assassinated  at age 25 | 
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  | 1865: | |  |  |  | Ku Klux Klan founded  at age 25 | 
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  | 1866: | |  |  |  | Walker, Mitchell 1st elected US black officials (Massachusetts)  at age 26 | 
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  | 1866-1868: | |  |  |  | Andrew Johnson president of US  from age 26 to age  28 | 
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  | 1867: | |  |  |  | Confederation of Canada  at age 27 | 
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  | 1867: |  | 
  | 1867: | |  |  |  | Alaska purchased from Russia  at age 27 | 
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  | 1867: | |  |  |  | Nebraska enters the union - 37th  at age 27 | 
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  | 1867: | |  |  |  | Diamonds discovered in South Africa  at age 27 | 
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  | 1868-1878: | |  |  |  | War between Cuba and Spain  from age 28 to age  38 | 
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  | 1869: | |  |  |  | Cutty Sark built  at age 29 | 
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  | 1869: | |  |  |  | Trans-continental railroad completed  at age 29 | 
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  | 1869: | |  |  |  | Financial black friday caused by attempt to corner gold  at age 29 | 
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  | 1869-1876: | |  |  |  | Ulysses S Grant president of US  from age 29 to age  36 | 
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  | 1869: | |  |  |  | Suez canal opened  at age 29 | 
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  | 1870: | |  |  |  | 1st black US senator (Hiram Revels)  at age 30 | 
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  | 1870: | |  |  |  | US black men can vote  at age 30 | 
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  | 1870-1871: | |  |  |  | Franco-Prussian war  from age 30 to age  31 | 
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  | 1871: | |  |  |  | Great Fire destroys Chicago  at age 31 | 
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  | 1873-1878: | |  |  |  | Depression, banks fail  from age 33 to age  38 | 
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  | 1873: | |  |  |  | Color Photographs  at age 33 | 
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  | 1876: | |  |  |  | Colorado enters the union - 38th  at age 36 | 
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  | 1876: | |  |  |  | Little Big Horn - Battle  at age 36 | 
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  | 1876: | |  |  |  | Telephone (Bell, Latimer)  at age 36 | 
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  | 1876: | |  |  |  | American Centennial  at age 36 | 
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  | 1877-1880: | |  |  |  | Ruthorford B Hayes president of US  from age 37 to age  40 | 
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  | 1877: | |  |  |  | Wax Cylinder Musical Recordings  at age 37 | 
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  | 1878: | |  |  |  | 1st commercial telephone exchange in US  at age 38 | 
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  | 1879: |  | 
  | 1879: | |  |  |  | Electric Light Bulb (Edison)  at age 39 | 
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  | 1881-1885: | |  |  |  | Chester Arthur president of US  from age 41 to age  45 | 
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  | 1881-1896: | |  |  |  | 5th Cholera pandemic  from age 41 to age  56 | 
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  | 1881: | |  |  |  | James A Garfield president of US  at age 41 | 
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  | 1881: | |  |  |  | President Garfield assassinated (dies of med. care)  at age 41 | 
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  | 1884: |  | 
  | 1884: |  | 
  | 1885-1888: | |  |  |  | Grover Cleveland president of US  from age 45 to age  48 | 
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  | 1885: |  | 
  | 1886: | |  |  |  | Induction Telegraph (Grandville T. Woods)  at age 46 | 
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  | 1887: | |  |  |  | X-Rays (Tesla, not Rontgen!)  at age 47 | 
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  | 1888: | |  |  |  | Great Blizzard of 1888 - 400+ deaths  at age 48 | 
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  | 1888: | |  |  |  | 70...77 rpm musical records  at age 48 | 
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  | 1889-1892: | |  |  |  | Benjamin Harrison president of US  from age 49 to age  52 | 
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  | 1889: | |  |  |  | South Dakota enters the union - 40th  at age 49 | 
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  | 1889: | |  |  |  | Holerith invents the punch card  at age 49 | 
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  | 1889: | |  |  |  | Montana enters the union - 41st  at age 49 | 
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  | 1889: | |  |  |  | Washington enters the union - 42nd  at age 49 | 
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  | 1889: | |  |  |  | North Dakota enters the union - 39th  at age 49 | 
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  | 1890: | |  |  |  | Wyoming enters the union - 44th  at age 50 | 
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  | 1890: | |  |  |  | Idaho enters the union - 43rd  at age 50 | 
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  | 1890: | |  |  |  | Battle of Wounded Knee  at age 50 | 
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  | 1890: | |  |  |  | Oklahoma organized as a territory  at age 50 | 
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  | 1891: | |  |  |  | Mormon prophesy of 'coming of lord' by 1891 unfulfilled  at age 51 | 
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  | 1893-1896: | |  |  |  | Grover Cleveland president of US  from age 53 to age  56 | 
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  | 1893: |  | 
  | 1893: | |  |  |  | Nikola Tesla invents Radio (not Marconi!)  at age 53 | 
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  | 1893-1897: | |  |  |  | US Financial panic, depression  from age 53 to age  57 | 
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  | 1893: | |  |  |  | New Zealand is 1st to grant women right to vote  at age 53 | 
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  | 1894: | |  |  |  | Plague in Hong Kong and China - 1 million die  at age 54 | 
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  | 1894-1895: | |  |  |  | Chinese-Japanese war (1)  from age 54 to age  55 | 
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  | 1896: | |  |  |  | Utah enters the union - 45th  at age 56 | 
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  | 1896: | |  |  |  | Supreme court approves separate but equal segregation  at age 56 | 
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  | 1897-1901: | |  |  |  | William McKinley president of US  from age 57 to age  61 | 
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  | 1898: | |  |  |  | Spanish American 1-year war  at age 58 | 
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  | 1899-1923: | |  |  |  | 6th Cholera pandemic  from age 59 to age  83 | 
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  | 1899-1902: | |  |  |  | Boer war  from age 59 to age  62 | 
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  | 1900: | |  |  |  | Hawaii organized as a territory  at age 60 | 
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  | 1900: | |  |  |  | Boxer rebellion in China  at age 60 | 
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  | 1900: | |  |  |  | Galveston Hurricane - 8,000 killed  at age 60 | 
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  | 1901-1910: | |  |  |  | Reign of King Edward VII (Saxe-Coburg)  from age 61 to age  70 | 
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  | 1901-1908: | |  |  |  | Theodore Roosevelt president of US  from age 61 to age  68 | 
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  | 1901: | |  |  |  | Third law of thermodynamics postulated (W. H. Nernst)  at age 61 | 
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  | 1901: | |  |  |  | First British submarine launched  at age 61 | 
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  | 1901: | |  |  |  | US President William McKinley assassinated  at age 61 | 
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  | 1901: | |  |  |  | Oil discovered in Texas in significant amounts  at age 61 | 
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  | 1901: | |  |  |  | Commonwealth of Australia founded  at age 61 | 
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  | 1901: | |  |  |  | Max Planck formulates the Laws of Radiation  at age 61 | 
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  | 1903: | |  |  |  | Nikola Tesla patents logic gates  at age 63 | 
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  | 1903: |  | 
  | 1904: |  | 
  | 1904-1905: | |  |  |  | Russian-Japanese war  from age 64 to age  65 | 
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  | 1907: | |  |  |  | Oklahoma enters the union - 46th  at age 67 | 
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  | 1907: |  | 
  | 1908: | |  |  |  | Tunguska atmospheric object explosion  at age 68 | 
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  | 1909: | |  |  |  | Union of South Africa formed  at age 69 | 
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  | 1909: | |  |  |  | North pole reached by Matthew Henson of Robert Peary's exp.  at age 69 | 
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  | 1909-1912: | |  |  |  | William Howard Taft president of US  from age 69 to age  72 | 
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  | 1910-1936: | |  |  |  | Reign of King George V (Windsor)  from age 70 to age  96 | 
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  | 1910: |  | 
  | 1910: | |  |  |  | Japan annexes Korea  at age 70 | 
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  | 1911: | |  |  |  | South pole reached by Roald Amundsen  at age 71 | 
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  | 1912: | |  |  |  | New Mexico enters the union - 47th  at age 72 | 
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  | 1912: | |  |  |  | Arizona enters the union - 48th  at age 72 | 
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  | 1912: | |  |  |  | Alaska organized as a territory  at age 72 | 
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  | 1912: |  | 
  | 1913-1920: | |  |  |  | Woodrow Wilson president of US  from age 73 to age  80 | 
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  | 1914: |  | 
  | 1914-1919: | |  |  |  | World War I  from age 74 to age  79 | 
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  | 1915: | |  |  |  | Einstein's Theory of Relativity  at age 75 | 
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  | 1916: |  | 
  | 1916: | |  |  |  | Irish Easter Rebellion  at age 76 | 
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  | 1917: | |  |  |  | Russian revolution  at age 77 | 
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  | 1917: |  | 
  | 1918-1920: | |  |  |  | Flu epidemic - 25 million plus die  from age 78 to age  80 | 
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  | 1918-1933: | |  |  |  | Prohibition  from age 78 to age  93 | 
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  | 1919: | |  |  |  | Shortwave Radio  at age 79 | 
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  | 1919: | |  |  |  | League of Nations instantiated  at age 79 | 
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  | 1920-1929: | |  |  |  | Roaring 20's  from age 80 to age  89 | 
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  | 1920: | |  |  |  | Palestine established  at age 80 | 
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  | 1920: | |  |  |  | Women receive right to vote in USA  at age 80 | 
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  | 1921-1924: | |  |  |  | Warren G Harding president of US  from age 81 to age  84 | 
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  | 1922: | |  |  |  | Insulin made available to diabetics  at age 82 | 
 | 
  | 1925-1928: | |  |  |  | Calvin Coolidge president of US  from age 85 to age  88 | 
 | 
  | 1925: | |  |  |  | Scopes trial on Evolutionary Theory  at age 85 | 
 | 
  | 1926: | |  |  |  | Sound in Movies  at age 86 | 
 | 
  | 1927: | |  |  |  | Holland Tunnel opens (New York City)  at age 87 | 
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  | 1927: | |  |  |  | 1st transAtlantic solo flight - Lindbergh  at age 87 | 
 | 
  | 1928: |  | 
  | 1928: | |  |  |  | Penicillin discovered  by Sir Alexander Fleming  at age 88 | 
 | 
  | 1928: |  | 
  | 1928: | |  |  |  | Video Recordings  at age 88 | 
 | 
  | 1929: | |  |  |  | Stock Market Crash  at age 89 | 
 | 
  | 1929-1932: | |  |  |  | Herbert Hoover president of US  from age 89 to age  92 | 
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  | 1929-1939: | |  |  |  | Great Depression  from age 89 to age  99 | 
 | 
  | 1930: | |  |  |  | Pluto Discovered  at age 90 | 
 | 
  | 1931-1933: | |  |  |  | Chinese-Japanese war (2)  from age 91 to age  93 | 
 | 
  | 1933: | |  |  |  | Armstrong invents FM modulation  at age 93 | 
 | 
  | 1933: | |  |  |  | Soviet communist party purge  at age 93 | 
 | 
  | 1933: | |  |  |  | Radio Astronomy  at age 93 | 
 | 
  | 1933-1945: | |  |  |  | Franklin D Roosevelt president of US  from age 93 until after line end | 
 | 
  | 1934: | |  |  |  | Longshoreman's strike - 35,000 on strike for 83 days  at age 94 | 
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  | 1935-1936: | |  |  |  | Abyssinian war  from age 95 to age  96 | 
 | 
  | 1935: |  | 
  | 1936-1952: | |  |  |  | Reign of King George VI (Windsor)  from age 96 until after line end | 
 | 
  | 1936: | |  |  |  | Reign of King Edward VIII (Windsor)  at age 96 | 
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  | 1936: | |  |  |  | Spanish Civil War  at age 96 | 
 | 
  | 1936: |  | 
  | 1937-1945: | |  |  |  | Chinese-Japanese war (3)  from age 97 until after line end | 
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  | 1937: | |  |  |  | Nylon (by DuPont)  at age 97 | 
 | 
  | 1938: | |  |  |  | Germany annexes Austria  at age 98 | 
 | 
  | 1939: | |  |  |  | Aircraft Jet Engine invented (by Ohain)  at age 99 | 
 | 
  | 1939: | |  |  |  | Digital Computer  at age 99 | 
 | 
  | 1939-1945: | |  |  |  | World War II  from age 99 until after line end | 
 | 
  | 1940: | |  |  |  | Color Television  at age 100 | 
 | 
  | 1940: | |  |  |  | 1st black general in US army  at age 100 | 
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