Lebensraum as a foreign policy concept was based upon domestic considerations, especially that of population growth and the pressure it placed upon existing German resources. War, for Lebensraum, was justified by the need to re-establish an acceptable ratio between land and people. Whereas the Weimar Republic foreign policy was based on borders, the National Socialist foreign policy would be based on space and expansionism and point to fundamentally different conceptions of world order: the bourgeois saw in terms of states and law, but Hitler maintained an image of ethnic or racially defined nationhood. Lebensraum served to create the economic condition of autarky in which the German people would be self-sufficient, no longer dependent on import or subject to demand shifts in international markets, which had been forcing industry to struggle against other nations.