The reason for the collapse of the state was World War I, the 1918 crop failure and the economic crisis. ... Legally, the collapse of the empire was formalized in the Treaty of Saint-Germain-en-Laye with Austria, which also acted as a peace treaty after the First World War, and in the Treaty of Trianon with Hungary.

Why was Hungary divided?

2/3 of Hungary's territory was taken away by the winner side with the aim of finally getting Hungary on its knees. ... Supposedly, the Entente powers wanted to ensure the right of autonomy for the nations living in the Carpathian Basin and this was why they cut up Hungary into small pieces.

What ended the Austria Hungarian empire?

In brief: The Austro-Hungarian Empire was dissolved at the end of World War I, after being defeated. The same thing happened with the German Empire. The empire was split up into different countries, some part of its territory was taken over by the victorious belligerents. 1.0.