Lebensraum
/ˈleɪb(ə)nzˌraʊm
/ /ˈleːbnsˌraʊm/noun [mass noun]
The territory which a group, state, or nation believes is needed for its natural development.The concept of Lebensraum as understood in Nazi ideology included in it the assumption that war was inevitable.
Origin
German, literally 'living space' (originally with reference to Germany).