Neo-Nazis envision the Fourth Reich as featuring Aryan supremacy, anti-Semitism, "Lebensraum", aggressive militarism and totalitarianism. Geopolitik contributed to Nazi foreign policy chiefly in the strategy and justifications for lebensraum. Additionally, the policy of "Lebensraum" planned mass expansion of Germany eastwards to the Ural Mountains. Policy for "Lebensraum" planned mass expansion of Germany's borders to eastwards of the [[Ural Mountains]]. During this time, the concept of Hitler's "Lebensraum" was redefined. These represented the first planks of the economic infrastructure of the postwar American Lebensraum. It was foundational to the concept of "Lebensraum". In 1901, extended his thesis in his essay titled "Lebensraum". Blood and soil was one of the foundations of the concept of Lebensraum, "living space". The eastern flank would be secured and land would be added to Germany's "Lebensraum". Ratzel published several papers, among which was the essay "Lebensraum" (1901) concerning biogeography.