| 1231-1808: |  | | | Papal Inquisition from before birth until age 15 |
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| 1478-1834: | |
| 1760-1820: | | | | Reign of King George III (Hanover) from before birth until age 27 |
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| 1789-1796: | | | | George Washington selected 1st President from before birth until age 3 |
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| 1792-1815: | | | | Napoleonic war from before birth until age 22 |
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| 1793: | | | | Marie Antoinette beheaded at age 0 |
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| 1793: | | | | Eli Whitney invents Cotton Gin (increases need for slaves) at age 0 |
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| 1794: | | | | US Post Office Established at age 1 |
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| 1794: | | | | Slavery abolished in French colonies at age 1 |
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| 1794: | | | | US Navy Established at age 1 |
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| 1796: | | | | Vaccination against Smallpox at age 3 |
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| 1796-1800: | | | | John Adams elected 2nd president of US from age 3 to age 7 |
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| 1796: | | | | Tennesee enters the union - 16th at age 3 |
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| 1796: | | | | France's presses get right of free speech at age 3 |
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| 1798-1800: | | | | Undeclared war with France from age 5 to age 7 |
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| 1798: | |
| 1798: | | | | Mississippi organized as a territory at age 5 |
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| 1798: | | | | US Marine Corps Established at age 5 |
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| 1799: | | | | Rosetta Stone found at age 6 |
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| 1800: | | | | Russia annexes Georgia at age 7 |
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| 1800: | | | | 1st Battery (Volta) at age 7 |
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| 1800: | | | | US capital moves from Philadelphia to Washington DC at age 7 |
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| 1800-1809: | | | | Thomas Jefferson elected president of US from age 7 to age 16 |
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| 1802: | | | | Babylonian cuniform deciphered at age 9 |
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| 1803: | | | | Ohio enters the union - 17th at age 10 |
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| 1803: | | | | Fulton propels vessel by steampower at age 10 |
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| 1803: | | | | Louisiana Territory Purchased at age 10 |
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| 1804: | | | | Haiti independent - 1st black country in West. Hemis. at age 11 |
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| 1804-1806: | | | | Lewis and Clark Expedition from age 11 to age 13 |
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| 1805: | | | | Morphine isolated at age 12 |
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| 1805: | | | | Thomas Jefferson re-elected president of US at age 12 |
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| 1807: | | | | Robert Fulton makes 1st practical steamboat voyage at age 14 |
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| 1808: | | | | Pompeii excavation begins in earnest at age 15 |
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| 1808: | | | | Import of new slaves into US Is banned at age 15 |
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| 1809-1816: | | | | James Madison elected president of US from age 16 to age 23 |
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| 1809: | | | | Charles Darwin born at age 16 |
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| 1810: | | | | Homeopathy founded at age 17 |
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| 1810: | | | | US pop. reaches 7.2 million at age 17 |
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| 1812-1814: | | | | War of 1812 from age 19 to age 21 |
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| 1812: | | | | Missouri organized as a territory at age 19 |
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| 1812: | | | | Louisiana enters the union - 18th at age 19 |
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| 1815: | | | | Sumbawa volcano (Indonesia) erupts; 50,000 killed at age 22 |
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| 1815: | | | | Battle of Waterloo at age 22 |
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| 1815: | | | | French outlaw slavery in France at age 22 |
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| 1816: | | | | Indiana enters the union - 19th at age 23 |
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| 1816: | | | | Photographic Negative at age 23 |
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| 1816: | |
| 1817: | | | | Alabama organized as a territory at age 24 |
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| 1817: | | | | Mississippi enters the union - 20th at age 24 |
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| 1817-1825: | | | | Erie canal constructed from age 24 to age 32 |
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| 1817-1824: | | | | James Monroe president of US from age 24 to age 31 |
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| 1817-1823: | | | | 1st Cholera pandemic from age 24 to age 30 |
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| 1817: | | | | Pentrich Revolution - England's last revolution at age 24 |
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| 1818: | | | | Savannah 1st steamship to cross the Atlantic at age 25 |
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| 1818: | | | | Illinois enters the union - 21st at age 25 |
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| 1819: | | | | Alabama enters the union - 22nd at age 26 |
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| 1819: | | | | Arkansas organized as a territory at age 26 |
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| 1819: | | | | Oersted discovers electro-magnetism at age 26 |
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| 1820: | | | | Maine enters the union - 23rd at age 27 |
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| 1820-1830: | | | | Reign of King George IV (Hanover) from age 27 to age 37 |
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| 1821: | | | | US pop. reaches 9.2 million at age 28 |
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| 1821: | | | | 1st US women's college at age 28 |
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| 1821-1829: | | | | Greek war of Independence from age 28 to age 36 |
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| 1821: | | | | Missouri enters the union - 24th at age 28 |
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| 1822: | | | | Florida organized as a territory at age 29 |
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| 1824-1828: | | | | John Quincy Adams president of US from age 31 to age 35 |
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| 1824: | | | | Erie canal finished at age 31 |
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| 1824: | | | | Internal Combustion Engine at age 31 |
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| 1826: | | | | 1st railroad tunnel (England) at age 33 |
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| 1827: | | | | 1st Black newspaper Freedom's Journal at age 34 |
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| 1827: | | | | Ohms Law formulated at age 34 |
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| 1827: | | | | Ship's propeller (screw) at age 34 |
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| 1828-1836: | | | | Andrew Jackson president of US from age 35 to age 43 |
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| 1828: | | | | 1st railroad in the US at age 35 |
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| 1828: | | | | 1st Webster's Dictionary at age 35 |
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| 1829: | | | | 1st US patent on a typewriter at age 36 |
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| 1829-1851: | | | | 2nd Cholera pandemic from age 36 until after line end |
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| 1830-1860: | | | | Underground railroad leads 100,000+ slaves to freedom in US from age 37 until after line end |
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| 1830-1837: | | | | Reign of King William IV (Hanover) from age 37 to age 44 |
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| 1830: | | | | Mormons (Latter Day Saints) founded at age 37 |
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| 1832: | | | | Horse-drawn trolleys in New York at age 39 |
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| 1833: | | | | Slavery abolished in British Empire (home and colonies) at age 40 |
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| 1833: | |
| 1834: | | | | Modern computer conceived by Charles Babbage at age 41 |
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| 1835: | | | | Mormon leader Joseph Smith prophesies of 'coming of lord' by 1891 at age 42 |
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| 1835-1842: | | | | 2nd Seminole War from age 42 to age 49 |
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| 1835: | |
| 1836: | | | | Battle of the Alamo at age 43 |
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| 1836: | | | | Arkansas enters the union -25th at age 43 |
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| 1836: | | | | Texas war for independence from Mexico at age 43 |
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| 1837: | | | | Michigan enters the union - 26th at age 44 |
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| 1837: | | | | Depression and Panic in the US - inflation, speculation at age 44 |
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| 1837-1840: | | | | Martin Van Buren president of US from age 44 to age 47 |
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| 1837-1901: | | | | Reign of Queen Victoria (Hanover) from age 44 until after line end |
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| 1838-1839: | | | | Forced relocation of Cherokee from age 45 to age 46 |
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| 1839-1842: | | | | Opium war between China and the English from age 46 to age 49 |
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| 1841-1844: | | | | John Tyler president of US from age 48 until after line end |
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| 1842: | | | | Chinese cede Hong Kong to the English at age 49 |
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