An empire which existed from
1867 to 1918. It was created in 1867 after the
Austrian Empire collapsed due to a Hungarian revolt and a compromise was reached to give the Hungarians equal power in the empire. The empire was made up of two roughly equal halves, the Austrian, mostly German speaking half, and the Hungarian, mostly Hungarian speaking half. The empire was plagued by tensions throughout its entire existence. It had a longstanding rivalry with the Russian Empire and the two often engaged in proxy wars in the Balkans. When the Ottoman Empire lost the
Balkan war and its control over the Balkans, Austria-Hungary seized the opportunity and occupied Bosnia, which upset the Russians even more. In 1910, the empire annexed Bosnia, which upset Russia and Serbia, because Bosnia had many ethnic Serbs in it. Ethnic tensions soon began erupting in the empire, and it was on the verge of total collapse. Serbia hoped to destabilized the empire and acquire its Balkan lands, so it organized an assassination of the heir to the Austrian throne, Franz Ferdinand. Austria-Hungary then declared war on Serbia, Germany joined the war on
Austria's side, but Russia and France joined the war on
Serbia's side. Long story short, the war was a total disaster for the empire, and on top of that,
the empire's ethnic minorities began revolting.
The empire basically came to a crashing and chaotic end in 1918 after its ethnic minorities took control of the most of
the empire. The empire was then forced to pull out of World War I. In the subsequent peace treaties a year later, it was dismantled, but it had in reality already collapsed.
Often, the demise of Austria-Hungary is incorrectly attributed to World War I. The war itself, nor the peace treaties really dismantled the empire. The empire was already on the verge of collapse even before the war.
The Empire started the war because they knew winning it was their only shot at being strong enough to hold their empire together.
The Empire's demise was really because it was ethnically diverse and nationalism grew in those ethnic minorities, who were upset at the Germans and Hungarians dominating the empire.