Spouse
1847
Apr 10
| 1847 • German inventor and industrialist Werner von Siemens founds Siemens AG & Halske. |
1900
Age: 52y
| 1900 • The United Kingdom proclaims a protectorate over Tonga. |
1921
Nov 15
Age: 74y
| 1921 • Researchers at the University of Toronto led by biochemist Frederick Banting announce the discovery of the hormone insulin. |