Lebensraum has some roots in [[Malthusianism]].<ref>[https://books.google.com/books?id=d72rAgAAQBAJ&pg=PA11 Global Population: History, Geopolitics, and Life on Earth]</ref><ref>[https://books.google.com/books?id=WkyPkLzLyrcC&pg=PA24 The Return of Geopolitics in Europe?: Social Mechanisms and Foreign Policy Identity Crises]</ref> Hitler wrote extensively about "living space" in his [[Zweites Buch]](second book).<ref>[https://www.nationalreview.com/article/423959/yale-professor-explains-hitlers-malthusianism-thinks-theres-something-it-robert Yale Professor Explains Hitler’s Malthusianism, Thinks There’s Something to It]</ref> | Lebensraum has some roots in [[Malthusianism]].<ref>[https://books.google.com/books?id=d72rAgAAQBAJ&pg=PA11 Global Population: History, Geopolitics, and Life on Earth]</ref><ref>[https://books.google.com/books?id=WkyPkLzLyrcC&pg=PA24 The Return of Geopolitics in Europe?: Social Mechanisms and Foreign Policy Identity Crises]</ref> Hitler wrote extensively about "living space" in his [[Zweites Buch]](second book).<ref>[https://www.nationalreview.com/article/423959/yale-professor-explains-hitlers-malthusianism-thinks-theres-something-it-robert Yale Professor Explains Hitler’s Malthusianism, Thinks There’s Something to It]</ref> |