Northern Transylvania Transylvania, and in 1920 the Treaty of Trianon assigned Transylvania to the Kingdom of Romania. In June 1940, after Romania was forced (as a consequence of Molotov–Ribbentrop Pact) to settle a claim to the Soviet Union over Bessarabian and Bukovinian territories, Hungary attempted to regain Transylvania, which it had lost in World War I. Germany and Italy pressured both Hungary and Romania to resolve the situation in a bilateral agreement. The two delegation met in Turnu Severin but the negotiations failed due to a demand for a 60,000 square kilometers territory on Hungarian side and only a population exchange on
History of Transylvania the successful Aster Revolution in Budapest brought the left liberal, pro-Entente count Mihály Károlyi to power as prime minister of Hungary. Influenced by Woodrow Wilson's pacifism, Károlyi ordered the disarmament of Hungarian Army. The Károlyi government outlawed all Hungarian armed associations and proposals intending to defend the country. The resulting Treaty of Bucharest was denounced in October 1918 by the Romanian government, which then re-entered the war on the Allied side and advanced to the Mureș (Maros) river in Transylvania. The leaders of Transylvania's National Party met and drafted a resolution invoking the right of self-determination (influenced by Woodrow Wilson's