The Serbian Question (Serbian: Српско питање / Srpsko pitanje) refers to several periods in Serbian history and diplomatic history. Establishment of a Serb nation-state, leading up to the Serbian Revolution. Official recognition of Revolutionary Serbia as the Principality of Serbia and international recognition (1815–1878). Great Eastern Crisis (1875–78). Pan-Slavism and Yugoslavism versus Pan-Serbism, in the Kingdom of Serbia and Serb community in Austria-Hungary. Serb unification in the Balkan Wars and World War I, and Austrian thwarting of Serbian expansion and influence. Creation of the Serbian Banovina in the Kingdom of Yugoslavia in 1940. Status of Serbia (and Serbs) within SFR Yugoslavia. Serb unification in the Yugoslav Wars.