In practice, that is exactly what the ghettos set up by the Nazis were.
Ghettos preceded concentration camps. Concentration camps appeared during the Nazi era in Germany. Ghettos were present in the largest cities in Germany (and other large urban areas in other countries) well before that.
Ghettos, concentration camps and extermination camps.
They were sent to ghettos prior to the Concentration Camps...
Ghettos were areas were minorities like jews lived, however these were controlled by the Nazis, guards made sure people who came in and out were allowed to and were not smuggling things, like food as it was rationed. However concentration camps were the places that were originally labour camps but then progressed to be places that killed people in large numbers
Poland
Life in the ghettos was not only restricted and confined, but eventually, everyone in the ghettos was carted to concentration camps.
ghettos, concentration camps, and death camps
They were taken from the ghettos to extermination camps, where they were killed.
The Jews were liquidated and forced to concentration camps.
The ghettos was getting too overcrowded so another solution had to be found for what to do with the Jews.
Ghettos were a small section of a city where Jews were herded into and kept until they were sent to concentration camps.
they killed them or sent them to ghettos and concentration camps