All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Friday 4 June 1920 2
1920The Treaty of TrianonVersailles, FranceHungary lost two-thirds of its territory and around three million Hungarians found themselves in other countries. It remains a live political wound.
1920Treaty of Trianon SignedPeace treaty formalizes dismantling of the Kingdom of HungaryHungary signed the Treaty of Trianon with the Allied powers, formally ending World War I hostilities and confirming the loss of roughly two-thirds of its pre-war territory and population. The treaty redrew borders across Central Europe, enlarging Czechoslovakia, Romania, and Yugoslavia at Hungary's expense. It remains a deeply contested episode in Hungarian national memory.