| 1829-1851: | |  |  |  | 2nd Cholera pandemic  from before birth until age 8 | 
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  | 1830-1860: | |  |  |  | Underground railroad leads 100,000+ slaves to freedom in US  from before birth until age 17 | 
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  | 1837-1901: | |  |  |  | Reign of Queen Victoria (Hanover)  from before birth until age 58 | 
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  | 1841-1844: | |  |  |  | John Tyler president of US  from before birth until age 1 | 
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  | 1844: | |  |  |  | 1st telegraph line message, Washington to New York  at age 1 | 
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  | 1845: | |  |  |  | Texas enters the union - 28th  at age 2 | 
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  | 1845-1848: | |  |  |  | James K Polk president of US  from age 2 to age  5 | 
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  | 1845-1849: | |  |  |  | Irish Potato Famine  from age 2 to age  6 | 
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  | 1845: | |  |  |  | Florida enters the union - 27th  at age 2 | 
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  | 1846-1848: | |  |  |  | The Mexican-US War  from age 3 to age  5 | 
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  | 1846: | |  |  |  | Iowa enters the union - 29th  at age 3 | 
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  | 1848-1856: | |  |  |  | 1st gold rush in California -- Sutters Mill  from age 5 to age  13 | 
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  | 1848: | |  |  |  | Wisconsin enters the union - 30th  at age 5 | 
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  | 1848: | |  |  |  | NY allows women to own real estate  at age 5 | 
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  | 1848: | |  |  |  | Oregon organized as a territory  at age 5 | 
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  | 1849: | |  |  |  | Fizeau measures speed of light  at age 6 | 
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  | 1849-1852: | |  |  |  | Zachary Taylor president of the US  from age 6 to age  9 | 
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  | 1850: | |  |  |  | Utah (included Nevada) organized as a territory  at age 7 | 
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  | 1850: | |  |  |  | World pop. est. at 1.1 billion  at age 7 | 
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  | 1850: | |  |  |  | US pop reaches 23 million  at age 7 | 
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  | 1850: | |  |  |  | New Mexico organized as a territory  at age 7 | 
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  | 1850: | |  |  |  | California enters the union - 31st  at age 7 | 
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  | 1851: | |  |  |  | Gold rush in Australia  at age 8 | 
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  | 1852-1859: | |  |  |  | 3rd Cholera pandemic  from age 9 to age  16 | 
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  | 1853-1856: | |  |  |  | Franklin Pierce president of US  from age 10 to age  13 | 
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  | 1853: | |  |  |  | Washington (included pt. of Idaho) organized as a territory  at age 10 | 
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  | 1854: | |  |  |  | Kansas  organized as a territory  at age 11 | 
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  | 1854: | |  |  |  | Nebraska organized as a territory  at age 11 | 
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  | 1854-1856: | |  |  |  | Crimean War  from age 11 to age  13 | 
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  | 1857-1860: | |  |  |  | James Buchanan president of US  from age 14 to age  17 | 
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  | 1857-1866: | |  |  |  | Transatlantic cable laid  from age 14 to age  23 | 
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  | 1857: | |  |  |  | Dred Scott decision: Blacks could not be US citizens  at age 14 | 
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  | 1858: | |  |  |  | India bill transfers government of India to England  at age 15 | 
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  | 1858: | |  |  |  | Minnesota enters the union - 32nd  at age 15 | 
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  | 1859: | |  |  |  | Oregon enters the union - 33rd  at age 16 | 
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  | 1859: | |  |  |  | Darwin pub. Origin Of Species  at age 16 | 
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  | 1859: |  | 
  | 1860: | |  |  |  | Rifled barrel invented  at age 17 | 
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  | 1860: | |  |  |  | South Carolina Secedes from the Union  at age 17 | 
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  | 1861: | |  |  |  | South Dakota organized as a territory  at age 18 | 
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  | 1861: | |  |  |  | North Dakota organized as a territory  at age 18 | 
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  | 1861: | |  |  |  | Nevada organized as a territory  at age 18 | 
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  | 1861-1865: | |  |  |  | Civil War  from age 18 to age  22 | 
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  | 1861: | |  |  |  | Colorado organized as a territory  at age 18 | 
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  | 1861: | |  |  |  | Kansas enters the union - 34th  at age 18 | 
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  | 1861: | |  |  |  | Gold rush in New Zealand  at age 18 | 
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  | 1861-1865: | |  |  |  | Abraham Lincoln president of US  from age 18 to age  22 | 
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  | 1861-1865: | |  |  |  | Confederate States of America Exist  from age 18 to age  22 | 
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  | 1861: | |  |  |  | The Apache Declare War on the US  at age 18 | 
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  | 1861: | |  |  |  | Transcontinental Telegraph completed  at age 18 | 
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  | 1862: | |  |  |  | US Homestead act  at age 19 | 
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  | 1863: | |  |  |  | Idaho organized as a territory  at age 20 | 
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  | 1863: | |  |  |  | Battle of Gettysburg  at age 20 | 
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  | 1863: | |  |  |  | Emancipation Proclamation frees southern slaves  at age 20 | 
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  | 1863-1879: | |  |  |  | 4th Cholera pandemic  from age 20 to age  36 | 
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  | 1863: | |  |  |  | Arizona organized as a territory  at age 20 | 
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  | 1863: | |  |  |  | West Virginia enters the union - 35th  at age 20 | 
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  | 1864: | |  |  |  | Louisiana organized as a territory  at age 21 | 
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  | 1864: | |  |  |  | Nevada enters the union - 36th  at age 21 | 
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  | 1865: | |  |  |  | President Lincoln assassinated  at age 22 | 
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  | 1865: | |  |  |  | Lister invents Disinfection  at age 22 | 
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  | 1865: | |  |  |  | Ku Klux Klan founded  at age 22 | 
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  | 1866: | |  |  |  | Walker, Mitchell 1st elected US black officials (Massachusetts)  at age 23 | 
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  | 1866-1868: | |  |  |  | Andrew Johnson president of US  from age 23 to age  25 | 
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  | 1867: | |  |  |  | Diamonds discovered in South Africa  at age 24 | 
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  | 1867: | |  |  |  | Confederation of Canada  at age 24 | 
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  | 1867: |  | 
  | 1867: | |  |  |  | Alaska purchased from Russia  at age 24 | 
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  | 1867: | |  |  |  | Nebraska enters the union - 37th  at age 24 | 
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  | 1868-1878: | |  |  |  | War between Cuba and Spain  from age 25 to age  35 | 
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  | 1869: | |  |  |  | Cutty Sark built  at age 26 | 
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  | 1869-1876: | |  |  |  | Ulysses S Grant president of US  from age 26 to age  33 | 
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  | 1869: | |  |  |  | Trans-continental railroad completed  at age 26 | 
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  | 1869: | |  |  |  | Suez canal opened  at age 26 | 
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  | 1869: | |  |  |  | Financial black friday caused by attempt to corner gold  at age 26 | 
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  | 1870-1871: | |  |  |  | Franco-Prussian war  from age 27 to age  28 | 
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  | 1870: | |  |  |  | US black men can vote  at age 27 | 
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  | 1870: | |  |  |  | 1st black US senator (Hiram Revels)  at age 27 | 
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  | 1871: | |  |  |  | Great Fire destroys Chicago  at age 28 | 
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  | 1873-1878: | |  |  |  | Depression, banks fail  from age 30 to age  35 | 
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  | 1873: | |  |  |  | Color Photographs  at age 30 | 
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  | 1876: | |  |  |  | Telephone (Bell, Latimer)  at age 33 | 
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  | 1876: | |  |  |  | American Centennial  at age 33 | 
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  | 1876: | |  |  |  | Little Big Horn - Battle  at age 33 | 
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  | 1876: | |  |  |  | Colorado enters the union - 38th  at age 33 | 
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  | 1877-1880: | |  |  |  | Ruthorford B Hayes president of US  from age 34 to age  37 | 
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  | 1877: | |  |  |  | Wax Cylinder Musical Recordings  at age 34 | 
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  | 1878: | |  |  |  | 1st commercial telephone exchange in US  at age 35 | 
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  | 1879: |  | 
  | 1879: | |  |  |  | Electric Light Bulb (Edison)  at age 36 | 
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  | 1881-1885: | |  |  |  | Chester Arthur president of US  from age 38 to age  42 | 
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  | 1881: | |  |  |  | President Garfield assassinated (dies of med. care)  at age 38 | 
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  | 1881-1896: | |  |  |  | 5th Cholera pandemic  from age 38 to age  53 | 
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  | 1881: | |  |  |  | James A Garfield president of US  at age 38 | 
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  | 1884: |  | 
  | 1884: |  | 
  | 1885-1888: | |  |  |  | Grover Cleveland president of US  from age 42 to age  45 | 
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  | 1885: |  | 
  | 1886: | |  |  |  | Induction Telegraph (Grandville T. Woods)  at age 43 | 
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  | 1887: | |  |  |  | X-Rays (Tesla, not Rontgen!)  at age 44 | 
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  | 1888: | |  |  |  | Great Blizzard of 1888 - 400+ deaths  at age 45 | 
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  | 1888: | |  |  |  | 70...77 rpm musical records  at age 45 | 
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  | 1889-1892: | |  |  |  | Benjamin Harrison president of US  from age 46 to age  49 | 
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  | 1889: | |  |  |  | Montana enters the union - 41st  at age 46 | 
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  | 1889: | |  |  |  | Holerith invents the punch card  at age 46 | 
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  | 1889: | |  |  |  | South Dakota enters the union - 40th  at age 46 | 
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  | 1889: | |  |  |  | Washington enters the union - 42nd  at age 46 | 
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  | 1889: | |  |  |  | North Dakota enters the union - 39th  at age 46 | 
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  | 1890: | |  |  |  | Battle of Wounded Knee  at age 47 | 
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  | 1890: | |  |  |  | Idaho enters the union - 43rd  at age 47 | 
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  | 1890: | |  |  |  | Wyoming enters the union - 44th  at age 47 | 
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  | 1890: | |  |  |  | Oklahoma organized as a territory  at age 47 | 
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  | 1891: | |  |  |  | Mormon prophesy of 'coming of lord' by 1891 unfulfilled  at age 48 | 
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  | 1893: | |  |  |  | New Zealand is 1st to grant women right to vote  at age 50 | 
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  | 1893: |  | 
  | 1893: | |  |  |  | Nikola Tesla invents Radio (not Marconi!)  at age 50 | 
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  | 1893-1896: | |  |  |  | Grover Cleveland president of US  from age 50 to age  53 | 
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  | 1893-1897: | |  |  |  | US Financial panic, depression  from age 50 to age  54 | 
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  | 1894-1895: | |  |  |  | Chinese-Japanese war (1)  from age 51 to age  52 | 
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  | 1894: | |  |  |  | Plague in Hong Kong and China - 1 million die  at age 51 | 
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  | 1896: | |  |  |  | Supreme court approves separate but equal segregation  at age 53 | 
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  | 1896: | |  |  |  | Utah enters the union - 45th  at age 53 | 
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  | 1897-1901: | |  |  |  | William McKinley president of US  from age 54 to age  58 | 
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  | 1898: | |  |  |  | Spanish American 1-year war  at age 55 | 
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  | 1899-1923: | |  |  |  | 6th Cholera pandemic  from age 56 until after line end | 
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  | 1899-1902: | |  |  |  | Boer war  from age 56 to age  59 | 
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  | 1900: | |  |  |  | Boxer rebellion in China  at age 57 | 
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  | 1900: | |  |  |  | Galveston Hurricane - 8,000 killed  at age 57 | 
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  | 1900: | |  |  |  | Hawaii organized as a territory  at age 57 | 
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  | 1901: | |  |  |  | US President William McKinley assassinated  at age 58 | 
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  | 1901: | |  |  |  | Commonwealth of Australia founded  at age 58 | 
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  | 1901: | |  |  |  | Oil discovered in Texas in significant amounts  at age 58 | 
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  | 1901: | |  |  |  | Max Planck formulates the Laws of Radiation  at age 58 | 
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  | 1901-1908: | |  |  |  | Theodore Roosevelt president of US  from age 58 to age  65 | 
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  | 1901: | |  |  |  | First British submarine launched  at age 58 | 
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  | 1901-1910: | |  |  |  | Reign of King Edward VII (Saxe-Coburg)  from age 58 to age  67 | 
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  | 1901: | |  |  |  | Third law of thermodynamics postulated (W. H. Nernst)  at age 58 | 
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  | 1903: |  | 
  | 1903: | |  |  |  | Nikola Tesla patents logic gates  at age 60 | 
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  | 1904-1905: | |  |  |  | Russian-Japanese war  from age 61 to age  62 | 
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  | 1904: |  | 
  | 1907: | |  |  |  | Oklahoma enters the union - 46th  at age 64 | 
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  | 1907: |  | 
  | 1908: | |  |  |  | Tunguska atmospheric object explosion  at age 65 | 
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  | 1909: | |  |  |  | North pole reached by Matthew Henson of Robert Peary's exp.  at age 66 | 
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  | 1909: | |  |  |  | Union of South Africa formed  at age 66 | 
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  | 1909-1912: | |  |  |  | William Howard Taft president of US  from age 66 to age  69 | 
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  | 1910-1936: | |  |  |  | Reign of King George V (Windsor)  from age 67 until after line end | 
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  | 1910: |  | 
  | 1910: | |  |  |  | Japan annexes Korea  at age 67 | 
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  | 1911: | |  |  |  | South pole reached by Roald Amundsen  at age 68 | 
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  | 1912: |  | 
  | 1912: | |  |  |  | Arizona enters the union - 48th  at age 69 | 
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  | 1912: | |  |  |  | New Mexico enters the union - 47th  at age 69 | 
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  | 1912: | |  |  |  | Alaska organized as a territory  at age 69 | 
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  | 1913-1920: | |  |  |  | Woodrow Wilson president of US  from age 70 until after line end | 
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  | 1914-1919: | |  |  |  | World War I  from age 71 until after line end | 
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  | 1914: |  | 
  | 1915: | |  |  |  | Einstein's Theory of Relativity  at age 72 | 
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