Parents
Spouse
Children
Siblings
1899
| 1899 • David Hilbert creates the modern concept of geometry with the publication of his book Grundlagen der Geometrie. |
1917
May 2
Age: 18y
|
marriageHenry John Rosander Henry, Missouri, USA ⇓ 1 Source ⇓ |
| 1917 • WWI: A conscription crisis in Canada leads to passage of the Military Service Act. |
1918
Feb 21
Age: 19y
|
birth of childMildred E Rosander Galva, Henry, Illinois, USA ⇓ 1 Source ⇓ |
| 1918 • The Spartacist League founds the German Communist Party. |
1923
Nov 25
Age: 24y
|
birth of childRussell H Rosander 1 Source ⇓ |
| 1923 • In Germany, General Hans von Seeckt orders the Reichswehr to dissolve the Social Democratic-Communist government of Saxony, which is refusing to accept the authority of the Reich government. |
1940
Apr 6
Age: 41y
| 1940 • WWII: Italy declares war on France and the United Kingdom. |
1983
Age: 84y
| 1983 • Pioneer 10 passes the orbit of Neptune, becoming the first man-made object to leave the vicinity of the major planets of the Solar System. |