Parents
Spouse
Siblings
1874
Feb 5
| 1874 • John Ernst Worrell Keely demonstrates his "induction resonance motion motor" — a perpetual motion machine. It turns out to be a fraud. |
1910
Age: 35y
| 1910 • Montenegro is proclaimed an independent kingdom under Nicholas I. |
1920
Age: 45y
| 1920 • Treaty of Trianon: Peace is restored between the Allied Powers and Hungary. Hungary loses 72% of its territory. |
1930
Age: 55y
| 1930 • Building of the Boulder Dam (later known as the Hoover Dam) is started on the Colorado River in the United States. |
1940
Apr 2
Age: 66y
|
residenceMemphis, Scotland County, Missouri, USA ⇓ George lived at 140 West Jefferson Street in Memphis. Alta's mother, Harriet Madison Jenkins is living with them at 85 years old shortly before her death. 1 Source ⇓ |
| 1940 • Plutonium is first synthesized in the laboratory by a team led by Glenn T. Seaborg and Edwin McMillan at the University of California, Berkeley. |
1950
Apr 10
Age: 76y
| 1950 • World Dance Council inaugurated. |
1966
Age: 91y
| 1966 • In the People's Republic of China, Mao Zedong begins the Cultural Revolution to purge and reorganize China's Communist Party. |