The result of the Treaty of Trianon, signed in 1920, was the dissolution of the Austro-Hungarian Empire and significant territorial loss for Hungary. The treaty resulted in Hungary losing about two-thirds of its territory and a substantial portion of its population. Lands were ceded to various neighboring countries, including Romania, Czechoslovakia, and Yugoslavia, resulting in profound economic impacts and ethnic tensions. Additionally, the treaty fostered a sense of national grievance and irredentism in Hungary, contributing to political instability in the interwar period. Trianon's legacy influenced Hungarian nationalism and sentiments leading up to and during World War II.