Treaty of St. Germain-en-Laye

The Treaty of Saint-Germain-en-Laye, signed in 1919, was an agreement between the Allies and Austria after World War I. It officially ended the war for Austria and resulted in significant territorial losses, including land that became part of new or redefined countries like Italy and Czechoslovakia. Austria was also required to reduce its military and accept responsibility for the war. The treaty aimed to reshape Europe's borders based on national self-determination but also led to economic and political challenges for Austria, influencing regional stability in the interwar period.