"Lebensraum" is a German term that translates to "living space." It was used in the early 20th century to justify the expansion of German territory, particularly during the time of the Nazi Party. The concept suggested that the German people needed more land to grow and thrive, which led to aggressive policies aimed at acquiring new territories. The idea of Lebensraum was a key element in Adolf Hitler's ideology, promoting the belief that the Aryan race was superior and entitled to dominate other peoples. This belief contributed to the expansionist policies that resulted in World War II and the suffering of millions, as it often involved the displacement and extermination of various ethnic groups.