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1904
| 1904 • Halford Mackinder presents a paper on "The Geographical Pivot of History" to the Royal Geographical Society of London in which he formulates the Heartland Theory, originating the study of geopolitics. |
1920
Jan 26
Age: 16y
| 1920 • United States presidential election, 1920: Republican Warren G. Harding defeats Democrat James M. Cox and Socialist Eugene V. Debs, in the first national U.S. election in which women have the right to vote. |
1922
Dec 23
Age: 19y
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marriageRalph Heaton Scotland County, Missouri, USA ⇓ 1 Source ⇓ |