Semen Markovich Dubnov

Born in 1860. a poor Jewish family. Attracted the attention of research on the history of Jewish religious movements: "Sabbatai Tsevi and psevdomessianizm in the XII century" ( "Sunrise", . 1882), . "Jacob Frank and his sect of Christianity" (ibid., . 1883), . "The history of Hasidism and tsadizma" (ibid., . 1887 - 1893),
. Compiled survey of the history of Jews in Russia: "On the study of the history of Russian Jews and pr. (St. Petersburg, 1891), and two manuals on the history of the Jews: a comprehensive course on the History of the Jews "(4 volumes, 1901 - 1913) and" Textbook of Jewish History "for young people (many editions). In his "Letters on Old and New Judaism" (St. Petersburg, 1907) Dubnov made with the theory of Jewish nationality, which he regards as the historical and cultural group.