Wars Cost Hungary Much of Its Land
After the suppression of the 1848 revolt, led by Louis Kossuth, against Hapsburg rule, the dual monarchy of Austria-Hungary was set up in 1867. The dual monarchy was defeated, along with the other Central Powers, in World War I. After a short-lived republic in 1918, the chaotic Communist rule of 1919 under Béla Kun ended with the Romanians occupying Budapest on Aug. 4, 1919. When the Romanians left, Adm. Nicholas Horthy entered the capital with a national army. The Treaty of Trianon of June 4, 1920, by which the Allies parceled out Hungarian territories, cost Hungary 68% of its land and 58% of its population.
In World War II, Hungary allied with Germany, which aided the country in recovering lost territories. Following the German invasion of Russia on June 22, 1941, Hungary joined the attack against the Soviet Union, but withdrew in defeat from the eastern front by May 1943. Germany occupied the country for the remainder of the war and set up a puppet government. Hungarian Jews and Gypsies were sent to death camps. The German regime was driven out by the Soviets in 1944–1945.