Those Poles, Czechs and others from German minorities who held citizenship of other countries were also known as Volksdeutsche. Ethnic (non-German) Poles, Czechs and other Slavs weren't considered Aryans by Nazi Germany[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] A definition of Aryan that included all non-Jewish Europeans was deemed unacceptable by Nazis, and Expert Advisor for Population and Racial Policy included a definition defining Aryan as someone who is "tribally" related to "German blood"[22]