What was the concept of Lebensraum associated with?

The concept of Lebensraum, which translates to "living space," was primarily associated with the idea of expanding Germany's territory, particularly towards the east. This notion was deeply rooted in nationalist ideology and was championed by Adolf Hitler as part of his broader vision for a greater German Empire. The goal was to acquire additional land to provide space for the growing German population and to secure the necessary resources to strengthen the nation's economy and military. This expansionist policy aimed specifically at countries in Eastern Europe, such as Poland and the Soviet Union, as these regions were seen as territories that could provide agricultural and natural resources vital for Germany.

While elements such as establishing diplomatic relations with Eastern Europe, achieving self-sufficiency through economic reforms, and integrating Slavic peoples into the Reich were aspects considered within broader Nazi ideologies, they did not encapsulate the primary essence of Lebensraum. The expansionist intent emphasized in the concept directly aligned with territorial acquisition rather than fostering diplomatic ties or integrating populations in a substantive and peaceful manner. Thus, the option reflecting the expansion of Germany's territory at the expense of the east accurately captures the fundamental ideology behind Lebensraum.