By the time Hitler began to "research" race theories, large groups of people who happened to speak the same language (more or less), who had a common history (more or less), and had developed certain modes of thought and social behavior were seen as the same "race." This was of course totally false and now seen as flawed thinking, but it was prevalent at that time. Using those parameters it was estimated that only 7% of Europe proper was populated by non-Aryan language/race groups, and that 7% included the Ural-Altaic (Hungarians, Turks, etc.), Semitic (Jews, Arabs, etc.), and other "darker-skinned" types who, for the most part, had followed the Aryans into Europe. It was propounded, however, that "three great racial groups" accounted for 93% of the total population of Europe, and they each were more "important" as to contributions to western civilization in the arts, the sciences, and law. On the first rung of his (Hitler's) racial ladder were the Nordic or Germanic races which for the most part consisted of the Germans, English, Dutch, Swedes, Norwegians, Danes, some Swiss and "probably" the Albanians and the "hopelessly mixed" Greeks. Second from the top was the "Latin race" which included the French, Italian, Spanish, Portuguese, and Romanian. And third down in his list, were the "Slavic races" consisting mainly of the Russians, Czechs, Yugoslavs, Bulgarians, and Poles. From the Slavic rung on down, to the Semitic (Jews, Arabs…) on the bottom; these were the "Untermensch". Adolf Hitler had a well thumbed 1920 two volume version of H.G. Wells’; The Outline of History, in his library which it appears he had owned since the middle twenties. His "racial ladder" closely followed the one put forward by Herbert G. Wells (he was not just a science fiction writer you know).