1828
Jan 1
| 1828 • South America: Brazil and Argentina recognize the independence of Uruguay. Simón Bolívar declares himself dictator of Gran Colombia. |
1850
Age: 21y
| 1850 • The New Mexico Territory is organized by order of the United States Congress. |
1907
Apr 13
Age: 79y
| 1907 • The triode thermionic amplifier invented by Lee de Forest, starting the development of electronics as a practical technology. |