Revolutions and interventions in Hungary (1918–1920)
There was a period of revolutions and interventions in Hungary between 1918 and 1920. The First Hungarian Republic was founded by Mihály Károlyi during the Aster Revolution in 1918. In March 1919, the republic was overturned by another revolution, and the Hungarian Soviet Republic (also known as Hungarian Republic of Councils) was created. The unresolved conflicts led to wars between Hungary and its neighbor states (Kingdom of Romania, Kingdom of Serbs, Croats and Slovenes and the evolving Czechoslovakia) in 1919. The Hungarian Soviet Republic ceased to exist after the Romanian occupation. The Treaty of Trianon in Versailles chilled the conflicts and beneficiaries for this event were Romania, the newly formed states of Czechoslovakia, and the Kingdom of Serbs, Croats and Slovenes.