| 1478-1834: |  | 
  | 1820-1830: | |  |  |  | Reign of King George IV (Hanover)  from before birth until age 4 | 
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  | 1821-1829: | |  |  |  | Greek war of Independence  from before birth until age 3 | 
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  | 1824-1828: | |  |  |  | John Quincy Adams president of US  from before birth until age 2 | 
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  | 1826: | |  |  |  | 1st railroad tunnel (England)  at age 0 | 
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  | 1827: | |  |  |  | Ohms Law formulated  at age 1 | 
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  | 1827: | |  |  |  | 1st Black newspaper Freedom's Journal  at age 1 | 
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  | 1827: | |  |  |  | Ship's propeller (screw)  at age 1 | 
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  | 1828: | |  |  |  | 1st railroad in the US  at age 2 | 
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  | 1828: | |  |  |  | 1st Webster's Dictionary  at age 2 | 
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  | 1828-1836: | |  |  |  | Andrew Jackson president of US  from age 2 to age  10 | 
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  | 1829: | |  |  |  | 1st US patent on a typewriter  at age 3 | 
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  | 1829-1851: | |  |  |  | 2nd Cholera pandemic  from age 3 to age  25 | 
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  | 1830-1860: | |  |  |  | Underground railroad leads 100,000+ slaves to freedom in US  from age 4 to age  34 | 
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  | 1830: | |  |  |  | Mormons (Latter Day Saints) founded  at age 4 | 
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  | 1830-1837: | |  |  |  | Reign of King William IV (Hanover)  from age 4 to age  11 | 
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  | 1832: | |  |  |  | Horse-drawn trolleys in New York  at age 6 | 
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  | 1833: | |  |  |  | Slavery abolished in British Empire (home and colonies)  at age 7 | 
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  | 1833: |  | 
  | 1834: | |  |  |  | Modern computer conceived by Charles Babbage  at age 8 | 
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  | 1835: | |  |  |  | Mormon leader Joseph Smith prophesies of 'coming of lord' by 1891  at age 9 | 
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  | 1835: |  | 
  | 1835-1842: | |  |  |  | 2nd Seminole War  from age 9 to age  16 | 
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  | 1836: | |  |  |  | Texas war for independence from Mexico  at age 10 | 
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  | 1836: | |  |  |  | Battle of the Alamo  at age 10 | 
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  | 1836: | |  |  |  | Arkansas enters the union -25th  at age 10 | 
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  | 1837-1901: | |  |  |  | Reign of Queen Victoria (Hanover)  from age 11 until after line end | 
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  | 1837: | |  |  |  | Michigan enters the union - 26th  at age 11 | 
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  | 1837: | |  |  |  | Depression and Panic in the US - inflation, speculation  at age 11 | 
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  | 1837-1840: | |  |  |  | Martin Van Buren president of US  from age 11 to age  14 | 
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  | 1838-1839: | |  |  |  | Forced relocation of Cherokee  from age 12 to age  13 | 
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  | 1839-1842: | |  |  |  | Opium war between China and the English  from age 13 to age  16 | 
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  | 1841-1844: | |  |  |  | John Tyler president of US  from age 15 to age  18 | 
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  | 1842: | |  |  |  | Chinese cede Hong Kong to the English  at age 16 | 
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  | 1844: | |  |  |  | 1st telegraph line message, Washington to New York  at age 18 | 
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  | 1845: | |  |  |  | Texas enters the union - 28th  at age 19 | 
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  | 1845: | |  |  |  | Florida enters the union - 27th  at age 19 | 
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  | 1845-1848: | |  |  |  | James K Polk president of US  from age 19 to age  22 | 
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  | 1845-1849: | |  |  |  | Irish Potato Famine  from age 19 to age  23 | 
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  | 1846-1848: | |  |  |  | The Mexican-US War  from age 20 to age  22 | 
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  | 1846: | |  |  |  | Iowa enters the union - 29th  at age 20 | 
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  | 1848: | |  |  |  | Oregon organized as a territory  at age 22 | 
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  | 1848: | |  |  |  | Wisconsin enters the union - 30th  at age 22 | 
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  | 1848: | |  |  |  | NY allows women to own real estate  at age 22 | 
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  | 1848-1856: | |  |  |  | 1st gold rush in California -- Sutters Mill  from age 22 to age  30 | 
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  | 1849: | |  |  |  | Fizeau measures speed of light  at age 23 | 
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  | 1849-1852: | |  |  |  | Zachary Taylor president of the US  from age 23 to age  26 | 
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  | 1850: | |  |  |  | World pop. est. at 1.1 billion  at age 24 | 
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  | 1850: | |  |  |  | New Mexico organized as a territory  at age 24 | 
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  | 1850: | |  |  |  | California enters the union - 31st  at age 24 | 
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  | 1850: | |  |  |  | Utah (included Nevada) organized as a territory  at age 24 | 
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  | 1850: | |  |  |  | US pop reaches 23 million  at age 24 | 
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  | 1851: | |  |  |  | Gold rush in Australia  at age 25 | 
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  | 1852-1859: | |  |  |  | 3rd Cholera pandemic  from age 26 to age  33 | 
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  | 1853: | |  |  |  | Washington (included pt. of Idaho) organized as a territory  at age 27 | 
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  | 1853-1856: | |  |  |  | Franklin Pierce president of US  from age 27 to age  30 | 
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  | 1854: | |  |  |  | Kansas  organized as a territory  at age 28 | 
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  | 1854-1856: | |  |  |  | Crimean War  from age 28 to age  30 | 
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  | 1854: | |  |  |  | Nebraska organized as a territory  at age 28 | 
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  | 1857-1866: | |  |  |  | Transatlantic cable laid  from age 31 to age  40 | 
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  | 1857-1860: | |  |  |  | James Buchanan president of US  from age 31 to age  34 | 
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  | 1857: | |  |  |  | Dred Scott decision: Blacks could not be US citizens  at age 31 | 
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  | 1858: | |  |  |  | Minnesota enters the union - 32nd  at age 32 | 
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  | 1858: | |  |  |  | India bill transfers government of India to England  at age 32 | 
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  | 1859: |  | 
  | 1859: | |  |  |  | Oregon enters the union - 33rd  at age 33 | 
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  | 1859: | |  |  |  | Darwin pub. Origin Of Species  at age 33 | 
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  | 1860: | |  |  |  | South Carolina Secedes from the Union  at age 34 | 
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  | 1860: | |  |  |  | Rifled barrel invented  at age 34 | 
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  | 1861: | |  |  |  | Gold rush in New Zealand  at age 35 | 
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  | 1861: | |  |  |  | North Dakota organized as a territory  at age 35 | 
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  | 1861-1865: | |  |  |  | Abraham Lincoln president of US  from age 35 to age  39 | 
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  | 1861: | |  |  |  | Colorado organized as a territory  at age 35 | 
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  | 1861-1865: | |  |  |  | Civil War  from age 35 to age  39 | 
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  | 1861: | |  |  |  | Nevada organized as a territory  at age 35 | 
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  | 1861: | |  |  |  | The Apache Declare War on the US  at age 35 | 
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  | 1861: | |  |  |  | Transcontinental Telegraph completed  at age 35 | 
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  | 1861-1865: | |  |  |  | Confederate States of America Exist  from age 35 to age  39 | 
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  | 1861: | |  |  |  | South Dakota organized as a territory  at age 35 | 
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  | 1861: | |  |  |  | Kansas enters the union - 34th  at age 35 | 
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  | 1862: | |  |  |  | US Homestead act  at age 36 | 
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  | 1863: | |  |  |  | Idaho organized as a territory  at age 37 | 
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  | 1863: | |  |  |  | Emancipation Proclamation frees southern slaves  at age 37 | 
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  | 1863: | |  |  |  | Arizona organized as a territory  at age 37 | 
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  | 1863-1879: | |  |  |  | 4th Cholera pandemic  from age 37 to age  53 | 
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  | 1863: | |  |  |  | Battle of Gettysburg  at age 37 | 
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  | 1863: | |  |  |  | West Virginia enters the union - 35th  at age 37 | 
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  | 1864: | |  |  |  | Louisiana organized as a territory  at age 38 | 
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  | 1864: | |  |  |  | Nevada enters the union - 36th  at age 38 | 
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  | 1865: | |  |  |  | Lister invents Disinfection  at age 39 | 
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  | 1865: | |  |  |  | Ku Klux Klan founded  at age 39 | 
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  | 1865: | |  |  |  | President Lincoln assassinated  at age 39 | 
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  | 1866-1868: | |  |  |  | Andrew Johnson president of US  from age 40 to age  42 | 
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  | 1866: | |  |  |  | Walker, Mitchell 1st elected US black officials (Massachusetts)  at age 40 | 
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  | 1867: | |  |  |  | Diamonds discovered in South Africa  at age 41 | 
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  | 1867: | |  |  |  | Confederation of Canada  at age 41 | 
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  | 1867: |  | 
  | 1867: | |  |  |  | Nebraska enters the union - 37th  at age 41 | 
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  | 1867: | |  |  |  | Alaska purchased from Russia  at age 41 | 
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  | 1868-1878: | |  |  |  | War between Cuba and Spain  from age 42 to age  52 | 
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  | 1869: | |  |  |  | Trans-continental railroad completed  at age 43 | 
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  | 1869-1876: | |  |  |  | Ulysses S Grant president of US  from age 43 to age  50 | 
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  | 1869: | |  |  |  | Cutty Sark built  at age 43 | 
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  | 1869: | |  |  |  | Financial black friday caused by attempt to corner gold  at age 43 | 
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  | 1869: | |  |  |  | Suez canal opened  at age 43 | 
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  | 1870-1871: | |  |  |  | Franco-Prussian war  from age 44 to age  45 | 
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  | 1870: | |  |  |  | US black men can vote  at age 44 | 
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  | 1870: | |  |  |  | 1st black US senator (Hiram Revels)  at age 44 | 
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  | 1871: | |  |  |  | Great Fire destroys Chicago  at age 45 | 
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  | 1873: | |  |  |  | Color Photographs  at age 47 | 
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  | 1873-1878: | |  |  |  | Depression, banks fail  from age 47 to age  52 | 
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  | 1876: | |  |  |  | Telephone (Bell, Latimer)  at age 50 | 
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  | 1876: | |  |  |  | American Centennial  at age 50 | 
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  | 1876: | |  |  |  | Colorado enters the union - 38th  at age 50 | 
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  | 1876: | |  |  |  | Little Big Horn - Battle  at age 50 | 
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  | 1877-1880: | |  |  |  | Ruthorford B Hayes president of US  from age 51 until after line end | 
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  | 1877: | |  |  |  | Wax Cylinder Musical Recordings  at age 51 | 
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  | 1878: | |  |  |  | 1st commercial telephone exchange in US  at age 52 | 
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  | 1879: | |  |  |  | Electric Light Bulb (Edison)  at age 53 | 
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  | 1879: |  |