By the Treaty of Trianon, signed June 4, 1920, Hungary was mutilated, the kingdom reduced from an imperial domain of 125,000 square miles to a landlocked nation of 36,000. Transylvania and the two million Hungarians residing there went to Rumania as a reward for joining the Allies. Slovakia, which a predominantly Catholic Hungary had ruled for centuries, was handed over to the Czechs. Other Hungarian lands went to the Kingdom of Serbs, Croats, and Slovenes. A slice of Hungary was even ceded to Austria.
