Answer:
territorial expansion
Explanation:
The idea of a Lebensraum is a key concept developed in Germany geopolitics, referring to a notion where a given population in order to fully grow will need a determinate area and favorable conditions.
The territorial expansion was conceived as an Aryan race was believed to have the cultural, supremacy and therefore a alleged right to dispose of the future and destiny of lower forms of cultures: the Slavic peoples, the gypsis, the Semitic-jewish, etc. The aggressive policies of expanding were first seen As Hitler took first Austria. The Anschluss, was welcomed by many Austrians who supported the ideas, and soon thereafter the north of Czechoslovakia was overrun by the annexation of its territories.
As the territorial expansion was fully conceived, in the idea of "Germania", which would be a huge European state to be populated by Aryans and would stretch throughout most of Europe. This was the imagery which later turned the further expansion into the outbreak of WWII.
