The Jewish population was not limited to "Palestine." The Disapora extended to most of the known world. Jews are known to have been in China, and India as well as Ethioipia. My quess is that neighbors were drawn to the Jewish faith. Christian missionaries seems to have followed Jewish routes. So "Jews" were also persons of other races, plus they had fellow-travelers who patronized the Jews but stopped short of actual membership. (Easier for women than men to get in, of course).
High Volume. Articles on Israel can also be found by clicking on the Topic or Keyword Israel. or WOT [War on Terror]
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David Irving has more important things to worry about than Jews.