The republic was one of the destinations for exiled and convicted persons, as well as for mass resettlements, or deportations affected by the central USSR authorities during the 1930s and 1940s, such as approximately 400,000 Volga Germans deported from the Volga German Autonomous Soviet Socialist Republic in September–October 1941, and then later the Greeks and Crimean Tatars. Deportees and prisoners were interned in some of the biggest Soviet labour camps (the Gulag), including ALZhIR camp outside Astana, which was reserved for the wives of men considered "enemies of the people". Many moved due to the policy of population transfer in the Soviet Union and others were forced into involuntary settlements in the Soviet Union.