| 1829-1851: |  | | | 2nd Cholera pandemic from before birth until age 9 |
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| 1830-1860: | | | | Underground railroad leads 100,000+ slaves to freedom in US from before birth until age 18 |
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| 1835-1842: | | | | 2nd Seminole War from before birth until age 0 |
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| 1837-1901: | | | | Reign of Queen Victoria (Hanover) from before birth until after line end |
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| 1839-1842: | | | | Opium war between China and the English from before birth until age 0 |
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| 1841-1844: | | | | John Tyler president of US from before birth until age 2 |
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| 1842: | | | | Chinese cede Hong Kong to the English at age 0 |
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| 1844: | | | | 1st telegraph line message, Washington to New York at age 2 |
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| 1845: | | | | Texas enters the union - 28th at age 3 |
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| 1845: | | | | Florida enters the union - 27th at age 3 |
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| 1845-1849: | | | | Irish Potato Famine from age 3 to age 7 |
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| 1845-1848: | | | | James K Polk president of US from age 3 to age 6 |
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| 1846: | | | | Iowa enters the union - 29th at age 4 |
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| 1846-1848: | | | | The Mexican-US War from age 4 to age 6 |
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| 1848: | | | | Wisconsin enters the union - 30th at age 6 |
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| 1848: | | | | Oregon organized as a territory at age 6 |
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| 1848: | | | | NY allows women to own real estate at age 6 |
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| 1848-1856: | | | | 1st gold rush in California -- Sutters Mill from age 6 to age 14 |
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| 1849-1852: | | | | Zachary Taylor president of the US from age 7 to age 10 |
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| 1849: | | | | Fizeau measures speed of light at age 7 |
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| 1850: | | | | New Mexico organized as a territory at age 8 |
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| 1850: | | | | Utah (included Nevada) organized as a territory at age 8 |
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| 1850: | | | | US pop reaches 23 million at age 8 |
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| 1850: | | | | California enters the union - 31st at age 8 |
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| 1850: | | | | World pop. est. at 1.1 billion at age 8 |
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| 1851: | | | | Gold rush in Australia at age 9 |
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| 1852-1859: | | | | 3rd Cholera pandemic from age 10 to age 17 |
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| 1853-1856: | | | | Franklin Pierce president of US from age 11 to age 14 |
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| 1853: | | | | Washington (included pt. of Idaho) organized as a territory at age 11 |
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| 1854-1856: | | | | Crimean War from age 12 to age 14 |
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| 1854: | | | | Kansas organized as a territory at age 12 |
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| 1854: | | | | Nebraska organized as a territory at age 12 |
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| 1857-1860: | | | | James Buchanan president of US from age 15 to age 18 |
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| 1857: | | | | Dred Scott decision: Blacks could not be US citizens at age 15 |
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| 1857-1866: | | | | Transatlantic cable laid from age 15 until after line end |
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| 1858: | | | | Minnesota enters the union - 32nd at age 16 |
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| 1858: | | | | India bill transfers government of India to England at age 16 |
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| 1859: | | | | Oregon enters the union - 33rd at age 17 |
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| 1859: | | | | Darwin pub. Origin Of Species at age 17 |
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| 1859: | |
| 1860: | | | | Rifled barrel invented at age 18 |
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| 1860: | | | | South Carolina Secedes from the Union at age 18 |
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| 1861: | | | | North Dakota organized as a territory at age 19 |
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| 1861: | | | | Nevada organized as a territory at age 19 |
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| 1861-1865: | | | | Confederate States of America Exist from age 19 until after line end |
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| 1861: | | | | The Apache Declare War on the US at age 19 |
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| 1861: | | | | Transcontinental Telegraph completed at age 19 |
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| 1861: | | | | South Dakota organized as a territory at age 19 |
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| 1861: | | | | Colorado organized as a territory at age 19 |
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| 1861: | | | | Gold rush in New Zealand at age 19 |
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| 1861: | | | | Kansas enters the union - 34th at age 19 |
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| 1861-1865: | | | | Abraham Lincoln president of US from age 19 until after line end |
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| 1861-1865: | | | | Civil War from age 19 until after line end |
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