After the breakdown of the Austro-Hungarian Monarchy on October 31, 1918, the liberated areas of Banat, Bačka and Baranja were recruited by the army of the Kingdom of Serbia. These areas were de facto managed by the Serbian National Council from Novi Sad, headed by Jaša Tomić. Therefore, on November 25, 1918, in Novi Sad, the Great National Assembly of Serbs, Bunjevci and other Slavs from Banat, Bačka and Baranja convened, chaired by Ignjat Pavlas. The Assembly declared a decision to join these three regions to the Kingdom of Serbia. Later, in Belgrade, on December 1, 1918, unification was proclaimed with an independent State of Slovenians, Croats and Serbs, led by the Yugoslav Committee in Zagreb, thus forming a unique Kingdom of Serbs, Croats and Slovenians.
