amengkubuwono IX promptly send a letter to Sukarno expressing his support to the newly born nation of Indonesia and acknowledge Yogyakarta Sultanate as part of Indonesian Republic. The Sunanate of Surakarta also doing the same, and both of the Javanese kingdoms realm are awarded special status as Special Region within Indonesian Republic. However because leftist anti-royalist uprising in Surakarta, the Sunanate of Surakarta lost its special administrative status in 1946 and absorbed into Central Java Province.
Yogyakarta's support was essential in Indonesian struggle for independence, during Indonesian National Revolution (1945-1949), The city of Yogyakarta became the capital of Indonesian Republic from 1946 to 1948 after the fell of Jakarta to Dutch. Later the Dutch also invade Yogyakarta causing the Republic capital to be transferred again to Bukittinggi in West Sumatra on 19 December 1948. Because of its significant contribution for the survival of Indonesian Republic, Yogyakarta was given the status as Special Administrative Region, making Yogyakarta the only region headed by a monarchy in Indonesia
