What is Austria-Hungary?
{{coord|48|12|N|16|21|E|source:kowiki|display=title}} {{Use dmy dates|date=January 2021}} {{Infobox former country | conventional_long_name = Austro-Hungarian Empire | native_name = {{nowrap|{{small|{{native name|de|Österreichisch-Ungarische Monarchie}}}}<br />{{small|{{native name|hu|Osztrák-Magyar Monarchia}}}}}} | flag_image = Flags of Austria-Hungary2.png | flag_image2 = Flag of the Austro-Hungarian Empire (1869-1918).svg | common_name = Austria–Hungary | era = New Imperialism{{*}}[[World War I]] | event_start = [[Austro-Hungarian Compromise of 1867|1867 Compromise]] | year_start = 1867 | date_start = 30 March | event1 = Dual Alliance | date_event1 = 7 October 1879 | event2 = Bosnian Crisis | date_event2 = 6 October 1908 | event3 = [[July Crisis]] | date_event3 = 28 June 1914 | event4 = [[Invasion of Serbia]] | date_event4 = 28 July 1914 | event5 = Aster Revolution | date_event5 = 31 October 1918 | event6 = [[Republic of German-Austria|Austrian Republic]] | date_event6 = 12 November 1918 | event7 = Hungarian Republic | date_event7 = 16 November 1918 | event8 = {{nowrap|[[Treaty of Saint-Germain-en-Laye (1919)|Treaty of Saint-Germain]]}} | date_event8 = {{nowrap|10 September 1919}} | event9 = [[Treaty of Trianon]] | date_event9 = 4 June 1920 | life_span = 1867–1918 | p1 = Austrian Empire | p2 = Kingdom of Hungary (1526–1867){{!}}Kingdom of Hungary | flag_p1 = Flag of the Habsburg Monarchy.svg | flag_p2 = Flag of the Habsburg Monarchy.svg | s1 = Republic of German-Austria{{!}}Republic of {{nowrap|German-Austria}} | s2 = First Hungarian Republic | s3