The 1960s were a time of ethnic revolution. Slavs, serbs, as well as other ethnic groups strongly disliked Austrohungarian rule and discrimination and therefore wanted independence. Back in the 1920s, a similar instance occurred but with Germany's help, it was put down. In 1965, a revolution led by Josip Broz Tito began. There were several demonstrations for ethnic equality and independence, all of which were put down. eventually, the situation escalated into guerrilla warfare.
Imperial Germany, being an ally of AustroHungary, sent troops to quell the violence, expecting a short war as did Italy. The violence didn't stop and it dragged Germany into a rather long conflict as Italy dropped out after only 1 year. Russia armed the rebels as Serbia was an ally of Russia. The Austro-Hungarian government carried out a genocide on the Serbs which was heavily condemned by the entente powers. After four years fighting, Germany drops out of the war due to heavy losses in 1970. For three more years, the Austro-Hungarian empire struggled against the yugoslav movement
On April 11 1975, the nation of Yugoslavia is born. As a result, Czechloslovakia and Romania also seceded away. The empire was too weak to stop them and the countries of Austria and Hungary broke up shortly thereafter. An effort led by Anne Frank called for better representation of the middle class and female suffrage. Massive reforms were passed in Germany making it more democratic.