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1930s ke dassak (decade) 1 January 1930 se suruu bhais rahaa aur 31 December 1939 me khalaas bhais rahaa. Ii 20th century ke 4th decade rahaa.
Ii dassak ke suruuwaat me dunia bhar me me depression rahaa aur iske ant hoe talak dunia bhar me World War II suruu hoe gais rahaa.