Background
Yan Yakovlevich was born on 4th of August, 1893 in Latvia.
Yan Yakovlevich was born on 4th of August, 1893 in Latvia.
He graduated from the Faculty of Social Sciences of Moscow State University (1924).
In 1930 was a director of the Scientific Library, at the same time Associate Professor of the Pedagogical Faculty of Voronezh State University. In 1931-1937 - Associate Professor of the Faculty of History of Voronezh State Pedagogical Institute. In 1937-1941 he taught at the Moscow Institute of Philosophy, Literature and History. In 1940-1949 he was a researcher at the Institute of History of the USSR Academy of Sciences, at the same time since 1946 he was a professor of the Faculty of History of the Latvian State University.