Karl Ernst Haushofer was a German general, professor, geographer, and diplomat. Haushofer's concept of Geopolitik influenced the ideological development of Adolf Hitler and Rudolf Hess. During Hess an
Major General Karl Haushofer, c. 1920
Lebensraum is a German concept of expansionism and Völkisch nationalism, the philosophy and policies of which were common to German politics from the 1890s to the 1940s. First popularized around 1901,
Karl Haushofer
…the Beer Hall Putsch, Haushofer visited Landsberg Prison to teach and mentor both Hess and Hitler. Haushofer also coined the political use of the term Lebensraum, which Hitler also used to justify both crimes against peace and genocide. At the same time, however, Gen. Haushofer's half-Jewish wife and their…
The German geographer and ethnographer Friedrich Ratzel (1844–1904) coined the word Lebensraum (1901) as a term of human geography, which the Nazis adopted as a by-word for the aggressive territorial expansion of Germany into the Greater Germanic Reich.
The Swedish political scientist Johan Rudolf Kjellén (1864–1922) interpreted Friedrich Ratzel's ethnogeographic term, Lebensraum, as a geopolitical term, which the Nazis applied to justify German warfare.
Poster from the Wochenspruch der NSDAP series, 17 December 1939. Hitler's quote reads: "We are fighting for the security of our people and for our living space."
Theobald von Bethmann Hollweg, Chancellor of Germany from 1909 until 1917, was a proponent of German Lebensraum as a natural right of Imperial Germany.