The Nazis considered the Slavs as Non-Aryan "Untermenschen" ("sub-humans") who were to be enslaved and exterminated by Germans. Slavic nations such as the Ukrainians, Czechs, Slovaks, Bulgarians and Croats who collaborated with Nazi Germany were still being perceived as not racially "pure" enough to reach the status of Germanic peoples, yet they were eventually considered ethnically better than the rest of the Slavs, mostly due to pseudoscientific theories about these nations having a considerable admixture of Germanic blood. In countries where these people lived, there were according to Nazis small groups of non-Slavic German descendants. These people underwent a "racial selection" process to determine whether or not they were "racially valuable", if the individual passed they would be re-Germanised and forcefully taken from their families in order to be raised as Germans. This secret plan Generalplan Ost ("Master Plan East") aimed at expulsion, enslavement and extermination of most Slavic people. Nazi policy towards them changed during World War II as a pragmatic means to resolve military manpower shortages: they were allowed, with certain restrictions, to serve in the Waffen-SS, in spite of being considered subhumans. Nazi propaganda portrayed people in Eastern Europe with an Asiatic appearance to be the result of intermingling between the native Slavic populations and Asiatic or Mongolian races as sub-humans dominated by the Jews with the help of Bolshevism. At the bottom of the racial scale of non-Aryans were Jews, ethnic Poles, ethnic Serbs and other Slavic people, Romani, and black people. The Nazis originally sought to rid the German state of Jews and Romani by means of deportation (and later extermination), while blacks were to be segregated and eventually eliminated through compulsory sterilization.