Treaty of Trianon

The treaty was part of the post–First World War peace settlements. The Allies’ presentation of terms was delayed amid political instability in Hungary and the Romanian occupation of Budapest in 1919. A Hungarian delegation received the draft in January 1920. Representatives of Hungary and the Allied Powers signed the treaty on 4 June 1920 at the Trianon Palace at Versailles, France.

The treaty established Hungary’s postwar borders and transferred territory to neighboring states. Britannica describes transfers that included Slovakia and Sub-Carpathian Ruthenia to Czechoslovakia, western Hungary (most of Burgenland) to Austria, Croatia-Slavonia and part of the Banat to the Kingdom of Serbs, Croats, and Slovenes, and most of the Banat and all of Transylvania to Romania; Italy received Fiume. Britannica notes that, except for plebiscites in two small regions, transfers were made without plebiscites. The archival and interpretive record reflects multiple national perspectives, and the consequences for communities crossed by the new borders remain part of the treaty’s contested legacy.

The Covenant of the League of Nations was incorporated into the treaty. Hungary’s armed forces were limited to 35,000 personnel, lightly armed and intended for internal order and frontier security. Reparations were to be determined later. British Online Archives describes Foreign Office records on treaty negotiations and aftermath that address reparations, disarmament, repatriation, and regional relations.

The settlement created profound territorial and demographic changes for Hungary and neighboring countries. Britannica links the treaty to resentment, ethnic conflict, and interwar tensions, noting Hungarian objections to territorial provisions and the absence of plebiscites in most affected areas. The treaty is remembered differently across the region: it is associated with postwar state formation and national self-determination in some settings, and with loss and dislocation in Hungarian national memory. Its centenary prompted public commemorations and historical discussion.