| 1829-1851: |  | | | 2nd Cholera pandemic from before birth until age 13 |
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| 1830-1860: | | | | Underground railroad leads 100,000+ slaves to freedom in US from before birth until age 22 |
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| 1835-1842: | | | | 2nd Seminole War from before birth until age 4 |
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| 1837-1840: | | | | Martin Van Buren president of US from before birth until age 2 |
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| 1837-1901: | | | | Reign of Queen Victoria (Hanover) from before birth until after line end |
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| 1838-1839: | | | | Forced relocation of Cherokee from age 0 to age 1 |
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| 1839-1842: | | | | Opium war between China and the English from age 1 to age 4 |
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| 1841-1844: | | | | John Tyler president of US from age 3 to age 6 |
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| 1842: | | | | Chinese cede Hong Kong to the English at age 4 |
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| 1844: | | | | 1st telegraph line message, Washington to New York at age 6 |
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| 1845-1849: | | | | Irish Potato Famine from age 7 to age 11 |
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| 1845: | | | | Florida enters the union - 27th at age 7 |
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| 1845: | | | | Texas enters the union - 28th at age 7 |
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| 1845-1848: | | | | James K Polk president of US from age 7 to age 10 |
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| 1846: | | | | Iowa enters the union - 29th at age 8 |
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| 1846-1848: | | | | The Mexican-US War from age 8 to age 10 |
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| 1848: | | | | Wisconsin enters the union - 30th at age 10 |
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| 1848-1856: | | | | 1st gold rush in California -- Sutters Mill from age 10 to age 18 |
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| 1848: | | | | NY allows women to own real estate at age 10 |
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| 1848: | | | | Oregon organized as a territory at age 10 |
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| 1849-1852: | | | | Zachary Taylor president of the US from age 11 to age 14 |
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| 1849: | | | | Fizeau measures speed of light at age 11 |
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| 1850: | | | | Utah (included Nevada) organized as a territory at age 12 |
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| 1850: | | | | US pop reaches 23 million at age 12 |
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| 1850: | | | | California enters the union - 31st at age 12 |
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| 1850: | | | | World pop. est. at 1.1 billion at age 12 |
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| 1850: | | | | New Mexico organized as a territory at age 12 |
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| 1851: | | | | Gold rush in Australia at age 13 |
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| 1852-1859: | | | | 3rd Cholera pandemic from age 14 to age 21 |
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| 1853-1856: | | | | Franklin Pierce president of US from age 15 to age 18 |
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| 1853: | | | | Washington (included pt. of Idaho) organized as a territory at age 15 |
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| 1854-1856: | | | | Crimean War from age 16 to age 18 |
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| 1854: | | | | Nebraska organized as a territory at age 16 |
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| 1854: | | | | Kansas organized as a territory at age 16 |
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| 1857-1866: | | | | Transatlantic cable laid from age 19 to age 28 |
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| 1857: | | | | Dred Scott decision: Blacks could not be US citizens at age 19 |
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| 1857-1860: | | | | James Buchanan president of US from age 19 to age 22 |
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| 1858: | | | | Minnesota enters the union - 32nd at age 20 |
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| 1858: | | | | India bill transfers government of India to England at age 20 |
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| 1859: | | | | Darwin pub. Origin Of Species at age 21 |
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| 1859: | |
| 1859: | | | | Oregon enters the union - 33rd at age 21 |
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| 1860: | | | | South Carolina Secedes from the Union at age 22 |
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| 1860: | | | | Rifled barrel invented at age 22 |
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| 1861: | | | | Nevada organized as a territory at age 23 |
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| 1861-1865: | | | | Civil War from age 23 to age 27 |
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| 1861-1865: | | | | Abraham Lincoln president of US from age 23 to age 27 |
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| 1861-1865: | | | | Confederate States of America Exist from age 23 to age 27 |
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| 1861: | | | | South Dakota organized as a territory at age 23 |
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| 1861: | | | | North Dakota organized as a territory at age 23 |
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| 1861: | | | | Colorado organized as a territory at age 23 |
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| 1861: | | | | The Apache Declare War on the US at age 23 |
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| 1861: | | | | Gold rush in New Zealand at age 23 |
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| 1861: | | | | Kansas enters the union - 34th at age 23 |
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| 1861: | | | | Transcontinental Telegraph completed at age 23 |
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| 1862: | | | | US Homestead act at age 24 |
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| 1863: | | | | Emancipation Proclamation frees southern slaves at age 25 |
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| 1863: | | | | Battle of Gettysburg at age 25 |
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| 1863: | | | | West Virginia enters the union - 35th at age 25 |
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| 1863: | | | | Arizona organized as a territory at age 25 |
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| 1863: | | | | Idaho organized as a territory at age 25 |
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| 1863-1879: | | | | 4th Cholera pandemic from age 25 until after line end |
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| 1864: | | | | Nevada enters the union - 36th at age 26 |
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| 1864: | | | | Louisiana organized as a territory at age 26 |
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| 1865: | | | | Ku Klux Klan founded at age 27 |
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| 1865: | | | | Lister invents Disinfection at age 27 |
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| 1865: | | | | President Lincoln assassinated at age 27 |
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| 1866: | | | | Walker, Mitchell 1st elected US black officials (Massachusetts) at age 28 |
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| 1866-1868: | | | | Andrew Johnson president of US from age 28 to age 30 |
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| 1867: | |
| 1867: | | | | Diamonds discovered in South Africa at age 29 |
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| 1867: | | | | Alaska purchased from Russia at age 29 |
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| 1867: | | | | Confederation of Canada at age 29 |
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| 1867: | | | | Nebraska enters the union - 37th at age 29 |
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| 1868-1878: | | | | War between Cuba and Spain from age 30 until after line end |
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| 1869-1876: | | | | Ulysses S Grant president of US from age 31 until after line end |
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| 1869: | | | | Financial black friday caused by attempt to corner gold at age 31 |
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| 1869: | | | | Cutty Sark built at age 31 |
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| 1869: | | | | Trans-continental railroad completed at age 31 |
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| 1869: | | | | Suez canal opened at age 31 |
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| 1870-1871: | | | | Franco-Prussian war from age 32 to age 33 |
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| 1870: | | | | 1st black US senator (Hiram Revels) at age 32 |
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| 1870: | | | | US black men can vote at age 32 |
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| 1871: | | | | Great Fire destroys Chicago at age 33 |
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