Concentration camp
With Nazi Germany's support, the Ustaše government of the new Independent State of Croatia (ISC) created concentration camps and extermination camps.  Mainly, the camps were for Serbs.  The ISC hated Serbs and thought of them as the ISC's biggest enemy.  However, the Ustaše also helped the Nazis with the "Final Solution" by killing many Jews in these camps.  Other people the Ustaše forced into the camps included Roma, Croats, Yugoslavians who had fought against the ISC, and people who broke rules and laws set by the ISC.