Compelled by the Soviet Union with a view towards the creation of a large South Slav Federation, in 1946 the new Communist government, led by Georgi Dimitrov, agreed to give Bulgarian Macedonia to a United Macedonia. With the Bled agreement, in 1947 Bulgaria formally confirmed the envisioned unification of the Macedonian region, but postponed this act until after the formation of the future Federation. It was the first time it accepted the existence of a separate Macedonian ethnicity and language. After the Tito–Stalin split the region of Pirin Macedonia remained part of Bulgaria and later the Bulgarian Communist Party revised its view of existence of a separate Macedonian nation and language.