難說。不同時期有不同劃分法
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Ethnicity and race
In Medieval Europe, all Asian peoples were thought of as descendants of Shem. By the nineteenth century, the term Semitic was confined to the ethnic groups who have historically spoken Semitic languages. These peoples were often considered to be a distinct race. However, some anti-Semitic racial theorists of the time argued that the Semitic peoples arose from the blurring of distinctions between previously separate races. This supposed process was referred to as Semiticization by the race-theorist Arthur de Gobineau. The notion that Semitic identity was a product of racial "confusion" was later taken up by the Nazi ideologue Alfred Rosenberg.[citation needed]
Modern science, in contrast, identifies a population's common physical descent through genetic research, and analysis of the Semitic-speaking peoples suggests that they have some common ancestry. Though no significant common mitochondrial results have been yielded, Y-chromosomal links between Semitic-speaking Near-Eastern peoples like Arabs, Assyrians and Jews have proved fruitful, despite differences contributed from other groups (see Y-chromosomal Aaron). Although population genetics is still a young science, it seems to indicate that a significant proportion of these peoples' ancestry comes from a common Near Eastern population to which (despite the differences with the Biblical genealogy) the term "Semitic" has been applied. However, this correlation should rather be attributed to said common Near Eastern origin, as for example Semitic-speaking Near Easterners from the Fertile Crescent are generally more closely related to non-Semitic speaking Near Easterners, such as Iranians, Anatolians, and Caucasians, than to other Semitic-speakers, such as Gulf Arabs, Eritrean Semites, Ethiopian Semites, and North African Arabs.[12][13]
Don't know where God is but the Devil is in the details