Among other things, it entailed the creation of a pan-German racial state structured according to Nazi ideology to ensure the supremacy of an Aryan-Nordic master race, massive territorial expansion into Central and Eastern Europe through its colonization with German settlers, the physical annihilation of the Jews, the Slavs (especially Poles and Russians), Roma ("gypsies") and others considered to be "unworthy of life" and the extermination, expulsion or enslavement of most of the Slavic peoples and others regarded as "racially inferior".[1] Nazi Germany's desire for aggressive territorial expansionism was one of the most important causes of World War II.