The concentration camps number nearly a hundred camps or holding places. They were actually started long before 1939. Since the list would be very long I am going to give you the website of the United States Museum of the Holocaust. There are other websites available but this site will help you and give you an excellent education.
Concentration Camps.
If they were caught, they were usually arrested and sent to concentration camps, where they usually died.
Death Camps: Hitler created the camps so he could quietly and efficiently kill the Jewish population. Concentration Camps: Used as a sort of prison by the Nazis for the duration of the war. They imprisoned people who committed "crimes" against the Nazi regime.
Ghettos, concentration camps and extermination camps.
The Allies (including Britain) stopped the Nazi concentration camps and the Holocaust by invading and defeating Nazi Germany.
Terrible
1933
if you mean in the Soviet concentration camps, then poorly; they lost millions of soldiers in the camps.
Dachau was the first permanent Nazi concentration camp and operated from March 1933 till April 1945. However, it was primarily for political oponents of the Nazi regime, not for Jews. In the later stages, however, many Jews from camps in Nazi-occupied Poland were transferred to camps in central and western Germany, including Dachau.
The most famous World War 2 concentration camps were located in Auschwitz (Poland), Dachau (Germany), and Treblinka (Poland). These camps were established by the Nazi regime and were responsible for the imprisonment and killing of millions of people during the Holocaust.
The key distinction was between extermination camps and labour camps ("ordinary" concentration camps).
There werent American CIVILIANS killed in Nazi Concentration camps. Civillians implies that they were not serving. There were American men in the army who were killed in Nazi Concentration camps, but no civilians.