what country did serbia become part of after ww1
History of Serbia The Serbian realms disappeared by the mid-16th century, torn by domestic feuds and overcome by Ottoman conquest. The success of the Serbian revolution against Ottoman rule in 1817 marked the birth of the Principality of Serbia, which achieved de facto independence in 1867 and finally gained recognition by the Great Powers in the Berlin Congress of 1878. As a victor in the Balkan Wars of 1912-1913, Serbia regained Vardar Macedonia, Kosovo and Raška (Old Serbia). In late 1918 the region of Vojvodina proclaimed its secession from Austria-Hungary to unite with the pan-Slavic State of Slovenes, Croats and Serbs; the Kingdom of Serbia joined the union on 1 December 1918, and the country was named the Kingdom of Serbs, Croats, and Slovenes.
World War I On 28 June 1914, Gavrilo Princip, a Bosnian Serb supporter of Yugoslav nationalism, assassinated the Austro-Hungarian heir Archduke Franz Ferdinand while he was visiting Sarajevo. The instability caused by competing Russian and Austro-Hungarian objectives in the Balkans meant this led to a diplomatic crisis, which ended with Austria-Hungary issuing an ultimatum to Serbia. [12][13] Interlocking alliances meant the crisis ultimately involved all the major European powers as well as their respective colonial empires and the conflict rapidly spread across the globe.