about
1805
| 1805 • The Horse Patrol, a mounted law enforcement force, is founded in London, England. |
1830
Age: 25y
| 1830 • January 27 – Webster–Hayne debate: Robert Y. Hayne of South Carolina debates the question of states' rights vs. federal authority with Daniel Webster of Massachusetts in the United States Congress. |
1830
Feb 2
Age: 25y
|
birth of childCatherine E Taylor Clarion County, Pennsylvania, USA ⇓ 3 Sources ⇓ |
| 1830 • Uruguay adopts its first constitution. |
1837
Mar
Age: 32y
birth of childJulia A Taylor Clarion County, Pennsylvania, USA ⇓ 1 Source ⇓ |
| 1837 • Louis Daguerre develops the daguerreotype. |
1850
Age: 45y
| 1850 • US census shows that 11.2% of the population classed as "Negro" are of mixed race. |