Final answer:
Concentration camps were prison-like facilities where persecuted people during WWII were forced to live in terrible conditions and often subjected to labor and murder.
Step-by-step explanation:
Concentration Camps during WWII
During World War II, concentration camps were facilities where a large number of persecuted people were forced to live in deplorable conditions. They were often subjected to forced labor and many were killed. Concentration camps were used by the Nazis to carry out their systematic genocide, targeting groups such as Jews, Romani people, and political dissidents.
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