HistoryAliensArt and the warArt theftsArt treasures in warBusiness failuresDepressionsDestruction and pillageEconomic conditionsErb-Gruppe (Firm)Ethnic relationsFamily-owned business enterprisesLabor unionsMoral and ethical aspectsMoral and ethical aspects of World War, 1939-1945National socialism and artNoncitizensPolitical aspectsPolitics and governmentPublic opinionWorking classWorld War, 1939-1945