The Treaty of Trianon, signed in 1920, had a profound impact on Hungary, resulting in the loss of two-thirds of its territory and significant population displacement. Hungary's borders were redrawn based on ethnic lines, leading to the partition of territories inhabited by Hungarian speakers into neighboring countries such as Romania, Czechoslovakia, and Yugoslavia. This territorial reduction diminished Hungary's economic resources and national pride, creating long-lasting grievances among Hungarians. The treaty not only altered the geopolitical landscape of Central Europe but also contributed to a sense of national trauma and revanchism that influenced Hungary's political narratives throughout the 20th century.