There's a misunderstanding here. Concentration camps did not lead to World War 2. Countries went to war for much more down to earth reasons. In fact, liberating concentration camps didn't figure anywhere in Allied war aims.
In World War 1 (1914-18) there were no concentration camps. For the Nazi concentration camps, see the related question.
The Allies liberated many Nazi and Axis concentration camps in World War Two.The prisoners of war were sent to concentration camps.
Concentration Camps Transit Camps Labour Camps Death Camps Extermination Camps.
There wasn't cold war concentration camps unless you were a Russian and sent to Siberia.
Most concentration camps were liberated by the allied forces towards the end of the war.
concentration camps
Why did Adolf create concentration camps?
Their was only about 20 Major concentration camps.
concentration camps were places where Jews were kept in the 2nd world war and then the used to get killed there
world war 2
World war 2
The concentration camps wass ran by the Leader of the SS Heinrich Himmler