Jewish ghettos established by Nazi Germany
Beginning with the invasion of Poland during World War II, the Nazi regime set up ghettos across German-occupied Eastern Europe in order to segregate and confine Jews, and sometimes Romani people, into small sections of towns and cities furthering their exploitation. In German documents, and signage at ghetto entrances, the Nazis usually referred to them as Jüdischer Wohnbezirk or Wohngebiet der Juden, both of which translate as the Jewish Quarter.
Source: Wikipedia — Jewish ghettos established by Nazi Germany (CC BY-SA 4.0)