If you want to divide people up into just three groups, for whatever reason, but you want to do it based upon ACTUAL DATA - the three groups would be Africans, Eurasians (All Europeans, All North Asians, all Indians and all Amerindians), and Islanders (Thai, Polynesian, etc). But that is not the grouping you still seem to prefer (even after being confronted with contrary data). No, you seem to want to lump in the Islanders with the Asians - even though the Asians are more related to Caucasians than they are to an Islander.