Treaty of Trianon
The Treaty of Versailles and the European Revolutions in the wake of World War I (4 June 1920)
Historical Map of Europe
Due to the revolutions and invasions that followed the end of the Great War, it wasn't until 1920 that Hungary was stable enough to sign its peace treaty with the Allies. The result was a much reduced state that had lost almost three-quarters of its territory and two-thirds of its population to Czechoslovakia, Romania, and Yugoslavia.