Space sought for occupation by a nation whose population is expanding WordNet 3.0 & Open English WordNet

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. Wikipedia

Nazi policies and practices of settler colonialism for the Aryan race Wikidata

A Großdeutschland obtained through Endoeuropean expansion, usually with a focus upon Drang nach Osten, and varying in its scope from the comparatively modest annexation of the Polish Border Strip to overlordship of the European continent by the conquest of Russian lands as far as the Urals. Wiktionary