No boundary-posts, all in common? Was this the idea for Jews in the European July-revolution of 1830? Is there such a thing as a “European era of Jews“? Or does the analysis gets stuck in a kind of “reference book of the history of Jews in Europe”? Shall we speak about the 20th century as a “Jewish century”? Does one look into the self image of Europe in the 19th century there seems to be only one radical answer: the 19th century was the “Jewish century” and the Jews the only Europeans . The lecture will explore this century and tries to find arguments for such a claim.