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In page Skopje:

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Skopje was liberated on 13 November 1944 by units of the Bulgarian People's Army (Bulgaria having switched sides in the war in September) aided by Yugoslav Partisans of the Macedonian National Liberation Army.[13][14][15][16] Skopje became the capital city of the newly proclaimed Democratic Federal Macedonia as set up by the ASNOM on 2 August 1944 in the Bulgarian occupation zone in Yugoslavia.[citation needed]