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Events on Wednesday 28 April 1920 1
1920Sovietization of AzerbaijanRed Army invasion ends Azerbaijani independenceThe Soviet 11th Army invaded the Azerbaijan Democratic Republic and installed a Bolshevik government in Baku, ending the country's brief period of independence. Azerbaijan became a Soviet republic and was later incorporated into the Transcaucasian SFSR. It did not regain independence until 1991.