 The total population, estimated at 8–10 million, kept growing dynamically until the middle of the century.The Slavic populations of the eastern lands, Rus' or Ruthenia, were solidly, except for the Polish colonizing nobility (and Polonized elements of local nobility), Eastern Orthodox, which portended future trouble for the Commonwealth.Poland had become the home to Europe's largest Jewish population, as royal edicts guaranteeing Jewish safety and religious freedom, issued during the 13th century (Bolesław the Pious, Statute of Kalisz of 1264), contrasted with bouts of persecution in Western Europe.