Jewish Contribution Quotes
He was referring to the entrepreneurial style and mercantile capitalism which most historians believe that the Jews developed originally and which led to the rapid initial development of the United States. He was not referring to the Jewish people who came to America. The historical Jewish development of much of modern capitalism and business, ironically, was the consequence of Jews in most of Europe not being allowed to own land or practice any of the professions. So the best of the Jewish talent was directed to trading, merchandizing and banking and they developed many of the basic capitalistic tools of today such as double entry bookkeeping.
Later, in the 1930s Ploetz became a Nazi and changed his views about the Jews and supported Nazi Anti-Semitism and crimes against the Jews.