Rudolf Kjellén
Johan Rudolf Kjellén was a Swedish political scientist, geographer and politician who first coined the term "geopolitics". His work was influenced by Friedrich Ratzel. Along with Alexander von Humboldt, Carl Ritter, and Ratzel, Kjellén would lay the foundations for the German Geopolitik that would later be espoused prominently by General Karl Haushofer.
13 June 1864
Born on the same birth date (13 June 1864): Dwight B. Waldo
Born on the same birth day (13 June): Carolyn Eisele • Dennis Locorriere • Don Budge • Ernest of Bavaria (1500–1560) • Howard Leese • José Bonifácio de Andrada e Silva • Karin Swanström • Mary Whitehouse • Mattias Hellberg • Norman Lloyd-Edwards • Sir Vincent Corbet, 1st Baronet • Taşkın Aksoy • Vassilis Karapialis
Born in the same month (June 1864): Alois Alzheimer • Dwight B. Waldo • Frank Chapman (ornithologist) • Frederick Bligh Bond • Heinrich Wölfflin • Hermann Minkowski • Jeanne Bérangère • Ninian Comper • Nobel Prize in Chemistry • Otto Erich Hartleben • Ransom E. Olds • Richard Strauss