No such organisation existed for the remainder of the East Indies. The 25th Army later established a BPUPK for Sumatra. On 1 March 1945, the 16th Army established the Investigating Committee for Preparatory Work for Independence ( Indonesian: Badan Penyelidik Usaha Persiapan Kemerdekaan (BPUPK)), for Java.

As the Japanese military position became increasingly untenable, especially after their defeat at the Battle of Leyte Gulf in October 1944, more and more native Indonesians were appointed to official positions in the occupation administration. The Japanese divided the territory into three military government regions, based on the largest islands: Sumatra was under the Japanese 25th Army, Java under the Japanese 16th Army and East Indonesia (the eastern islands), including part of Borneo (Sarawak and Sabah were under the Japanese 38th Army) was under the Imperial Japanese Navy. The territory then fell under the jurisdiction of the Japanese Southern Expeditionary Army Group ( Nanpo Gun), based in Saigon, Vietnam. The Japanese invaded the Dutch East Indies in 1942, defeated the Dutch colonial regime, and occupied it for the duration of World War II. 3.23 Chapter XVI: Constitutional amendment.3.22 Chapter XV: National flag, language, emblem, and anthem.3.21 Chapter XIV: National economy and social welfare.3.20 Chapter XIII: Education and culture.3.19 Chapter XII: State defence and security.3.10 Chapter VII-A: The Regional Representatives Council.3.9 Chapter VII: House of Representatives.

3.6 Chapter IV: Supreme advisory council.3.4 Chapter II: People's Consultative Assembly.3.3 Chapter I: Form of state and sovereignty.The governmental system has been described as 'presidential with parliamentary characteristics.' Following major upheavals in 1998 and the resignation of President Suharto, several political reforms were set in motion, via amendments to the Constitution, which resulted in changes to all branches of government as well as additional human rights provisions. It provides for a limited separation of executive, legislative, and judicial powers.

The 1945 Constitution sets forth the Pancasila, the five nationalist principles, as the embodiment of basic principles of an independent Indonesian state. It was abrogated by the Federal Constitution of 1949 and the Provisional Constitution of 1950, but restored by President Sukarno's 1959 Decree. The constitution was written in June, July, and August 1945, in the final months of the Japanese occupation of the Dutch East Indies at the end of World War II. The 1945 State Constitution of the Republic of Indonesia ( Indonesian: Undang-Undang Dasar Negara Republik Indonesia Tahun 1945, commonly abbreviated as UUD 1945 or UUD '45) is the supreme law and basis for all laws of Indonesia.

Pembukaan uud 1945 pdf