Well technically the first groups affected by the Concentration Camps were Criminals and Political Opponents of the Nazi Party. However, the earliest and most effective group to be effected by the Concentration Camps were the Jews.
no.
Concentration camps , transit camps , forced labour camps (aka) "work camps" , and death camps.
Concentration camps were established in 1933 and were primarily for political prisoners. Extermination camps were first established in 1941 and were for groups that the Nazis wanted to exterminate completely - Jews and 'gypsies'.From late 1944 onwards some Jews were transferred from the more easterly camps, especially Auschwitz, to ordinary concentration camps and the distinction became somewhat blurred.
1922
Technically all camps were within the concentration camp system, there were labour camps, transit camps and extermination camps. Concentration camps were generally intended for civillians, initially just for criminals, but gradually more types were included. Extermination camps were established about seven and a half years after the first concentration camps. They were much smaller than the average concentration camps (Auschwitz is an exception as it was both), as they only held enough inmates that were needed to opperate the gas chambers/vans and the cramatoria.
The first inmates of Nazi concentration camps were Communists, Social Democrats and various political dissidents. (The first inmates of the first concentration camp was women and children of the Boer nation in South Africa - 1898) (There were also Spanish concentration camps in Cuba in the mid 1895s).
1,500 camps including subcamps
Technically all camps were within the concentration camp system, there were labour camps, transit camps and extermination camps. Concentration camps were generally intended for civillians, initially just for criminals, but gradually more types were included. Extermination camps were established about seven and a half years after the first concentration camps. They were much smaller than the average concentration camps (Auschwitz is an exception as it was both), as they only held enough inmates that were needed to opperate the gas chambers/vans and the cramatoria.
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.
The first religion was actually the Roma (Gypsies) to be put in concentration camps not the Jews.
The term concentration camp (Konzentrationslager) was used already in March 1933.
I'm guesing you mean the Russian dictator so I'm just gonna say it. His name was Joseph Stalin. The Soviet Union was the first to build concentration camps.