Historical Jewish population

Jewish population centers have shifted tremendously over time, due in modern times to large scale population movements, and in earlier times due to a combination of population movements, religious conversions and assimilation. Population movements have been caused by both push and pull factors, with the most notable push factors being expulsions and persecutions, in particular the pogroms in the Russian Empire and the Holocaust.

Source: Wikipedia — Historical Jewish population (CC BY-SA 4.0)