Geographic Distribution of Liberal and Orthodox Jews
This map shows the approximate distribution of orthodox and liberal Jews in the German Empire [Reich]; it also shows large territories where neither group predominated. In the eastern territory around Posen, Polish Jews (who had often migrated from lands further east) increased the relative proportion of Orthodox Jews, who were also strongly represented in Alsace and Lorraine, the territories in the southwest (including Strasbourg) that were annexed by the Empire after France’s defeat in 1871.
Source: Michael A. Meyer with Michal Brenner, ed., Deutsch-Jüdische Geschichte in der Neuzeit, vol. 3, Steven M. Löwenstein et al., Umstrittene Integration 1871-1918, Munich: Beck Verlag, 1997, p. 102.