What was a nazi concentration camp?

Nazi concentration camps were work camps that were run by Hitlers SS police. These camps were set up to hold prisoners while torturing them or using them for work. These are not the same as extermination camps which were used for the mass killings of Jews.

Most prisoners were anything labeled "undesirables" such as German Communists, Socialists, Social Democrats, Jehovah's Witnesses, homosexuals, and persons accused of 'asocial' or socially 'deviant' behavior by the Germans (criminals), Jews, Soviets, disabled people, and clergymen.

so you know what happened be fore you were alive

explanation:

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.