The Great East was created with the merger of its constituent residencies on 25 May 1938 and was ruled by a governor. The first governor was G. A. W. Ch. de Haze Winkelman. Following World War II, the gouvernement (except for Netherlands New Guinea) became the State of the Great East (later the State of East Indonesia) on 24 December 1946. This state became a constituent of the federal United States of Indonesia in 1949 and was integrated into a unitary Indonesia in 1950 (western New Guinea in 1969). Today, the area is divided into the eastern 13 of Indonesia's 34 provinces.