The Banat Republic was a state, that was proclaimed in Timişoara, on November 1, 1918, as the Austro-Hungarian Empire collapsed. The republic was an attempt to preserve the integrity of German and Hungarian political elements in Banat region at the moment of the Austrian-Hungarian Empire decay.
The Kingdom of Serbia was created when Prince Milan Obrenović, ruler of the Principality of Serbia, was crowned King in 1882. The Principality of Serbia was ruled by the Karadjordjevic dynasty from 1817 onwards (at times replaced by the Obrenovic dynasty). The Principality, suzerain to the Porte, had expelled all Ottoman troops by 1867, de facto securing its independence. The Congress of Berlin in 1878 recognized the formal independence of the Principality of Serbia.
The Italian Regency of Carnaro was proclaimed as a state by Gabriele D'Annunzio in Fiume, now the city of Rijeka in Croatia, on September 8, 1920. The name was taken from the Kvarner Bay (Golfo del Carnaro in Italian, Kvarnerski zaljev in Croatian), where the city is located. The self-proclaimed state never received any recognition and in December it was replaced by the Free State of Fiume.
The first Czechoslovak Republic (Czech první Československá republika), refers to the first Czechoslovak state that existed from 1918 to 1938. The state was commonly called Czechoslovakia (Československo). It was composed of Bohemia, Moravia, Silesia, Slovakia and Subcarpathian Ruthenia. After 1933 Czechoslovakia remained the only functioning democracy in eastern Europe as other eastern European states had authoritarian or autocratic regimes leading them.
The Komancza Republic was an association of 30 Lemkos villages, founded in eastern Lemkivshchyna in Komańcza on November 4, 1918. It had a Ukrainiophile orientation, and planned to unite with the West Ukrainian National Republic. It was suppressed by the Polish government on 23 January 1919 during the Polish-Ukrainian War. Its head of state was the President of the Council, Pantelejmon Shpylka. Its fate was sealed by the Treaty of Saint Germain, which gave Galicia west of the San to Poland
The Second Czechoslovak Republic (Československá republika) refers to the second Czechoslovak state that existed from October 1, 1938 to March 14, 1939, thus existing for only 167 days. It was composed of Bohemia, Moravia, Silesia, and the autonomous regions of Slovakia and Subcarpathian Ruthenia.