Historische Organisatie
Republic of Indonesia
Republic of Indonesia
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Tijdlijn van de Organisatie
Indonesia proclaims independence
📅 17 Augustus 1945Sukarno and Mohammad Hatta proclaimed Indonesia’s independence. The declaration rejected the return of Dutch sovereignty and began a revolution in which Indonesians built state institutions and...
Sukarno and Hatta proclaim Indonesian independence
📅 17 Augustus 1945Sukarno and Mohammad Hatta proclaimed Indonesian independence after Japan’s surrender. Youth organizers had pressed for an immediate declaration, and Indonesians began building republican...
Central Indonesian National Committee is established
📅 29 Augustus 1945The KNIP was created to assist the president and represent the new republic. It gave institutional form to Indonesian political agency while the Dutch and Allies disputed who could govern the...
Republic establishes the People’s Security Army
📅 5 Oktober 1945The new republic formed the Tentara Keamanan Rakyat (TKR), building a national defense force amid the arrival of Allied troops and Dutch efforts to restore authority. The force’s creation expressed...
Battle of Surabaya begins
📅 27 Oktober 1945Fighting escalated after British forces demanded Indonesian arms and attempted to reassert control. Indonesian fighters defended the proclaimed republic; the battle exposed the colonial assumptions...
Hatta calls for the formation of political parties
📅 3 November 1945Vice-President Mohammad Hatta issued a government declaration encouraging the formation of political parties. It broadened political organization in the new republic and supported a plural public...
British assault on Surabaya intensifies the independence struggle
📅 10 November 1945British forces launched a major attack on Surabaya. Indonesian resistance and civilian flight caused immense destruction. The battle became a defining symbol of the revolution and of popular...
Sutan Sjahrir becomes prime minister
📅 14 November 1945The first Sjahrir cabinet took office, shifting the republic toward a parliamentary cabinet and a diplomatic strategy while Indonesian resistance continued. The move reflected debate among Indonesians...
Republican government relocates to Yogyakarta
📅 4 Januari 1946The Indonesian government moved its seat from Jakarta to Yogyakarta as Dutch and Allied military presence made the capital unsafe. The relocation helped sustain republican administration outside...
Dutch and Indonesian delegations initial the Linggadjati agreement
📅 15 November 1946The agreement recognized Republican authority over Java, Madura, and Sumatra and envisaged a federal United States of Indonesia linked to the Netherlands. Recognition was partial and conditional,...
Linggadjati agreement is formally signed
📅 25 Maart 1947The Netherlands and Republic of Indonesia signed the Linggadjati text after months of dispute. Its recognition of Republican control over Java, Madura, and Sumatra fell short of full independence...
Dutch launch the first major offensive, called “Operation Product”
📅 21 Juli 1947Dutch forces attacked Republican-held territory to seize economic assets and weaken the republic. The Dutch government called the campaign a “police action,” a euphemism that obscured a war of...
Ceasefire takes effect after the first Dutch offensive
📅 4 Augustus 1947A ceasefire halted much of the fighting, but Dutch forces retained territory gained in the offensive. The truce did not resolve the conflict over Indonesian sovereignty.
United Nations establishes a commission to mediate the conflict
📅 25 Augustus 1947The Security Council created a Good Offices Commission after international pressure over the Dutch offensive. Australia, Belgium, and the United States represented the commission, reflecting the...
Renville Agreement establishes a truce line favorable to Dutch control
📅 17 Januari 1948The agreement set a ceasefire line that left large areas under Dutch authority and required Republican forces to withdraw from some positions. Indonesian leaders accepted under intense pressure; the...
Madiun uprising opens within the fractured revolution
📅 18 September 1948Armed conflict broke out in Madiun amid political and military tensions within the republic. Republican forces defeated the uprising. This was an internal struggle within the independence...
Dutch launch a second offensive and capture Yogyakarta
📅 19 December 1948Dutch troops seized the Republican capital and arrested Sukarno, Hatta, and other leaders. The campaign again used the term “police action”; Indonesian resistance continued through guerrilla warfare...
UN Security Council calls for release of Republican leaders and renewed talks
📅 28 Januari 1949The Security Council demanded the release of detained Indonesian leaders and urged negotiations. The resolution challenged the Dutch attempt to settle the conflict by force and increased international...
Roem–Van Roijen agreement sets terms for restoring Republican authority
📅 7 Mei 1949The agreement provided for a ceasefire, release of Republican leaders, and their return to Yogyakarta, opening a path to a round-table conference. It was a negotiated step under pressure from...
Republican leaders return to Yogyakarta
📅 6 Juli 1949Sukarno, Hatta, and other leaders returned after their release, restoring the Republican government’s presence in its capital. Their return followed sustained diplomatic work and Indonesian armed...
Ceasefire takes effect in Java after Dutch-Indonesian agreement
📅 11 Augustus 1949The cease-hostilities order became effective in Java at midnight on 10–11 August; in Sumatra it took effect at midnight on 14–15 August. It followed years of Indonesian resistance and international...
Round Table Conference opens
📅 23 Augustus 1949Dutch, Republican, and federal-state delegations began negotiations over the transfer of sovereignty. The talks addressed the future of the archipelago, but West New Guinea was excluded from the...
Round Table Conference agreements are adopted
📅 2 November 1949The parties agreed to transfer sovereignty to the United States of Indonesia while leaving West New Guinea under Dutch control for later negotiation. The settlement ended Dutch sovereignty over most...
Republic replaces the Dutch-created federal United States of Indonesia
📅 17 Augustus 1950President Sukarno announced the return to a unitary Republic of Indonesia. The federal structure had been established during Dutch negotiations and military pressure; its dissolution expressed...
Indonesian workers occupy KPM offices during Dutch-company nationalization
📅 3 December 1957Labor actions against Dutch-owned companies escalated after the Netherlands refused to transfer West New Guinea. Indonesian law later treated 3 December 1957 as the effective date for...
Indonesia breaks diplomatic relations with the Netherlands over West New Guinea
📅 17 Augustus 1960Indonesia ended diplomatic relations as the dispute over Dutch-held West New Guinea intensified. The rupture followed the incomplete 1949 transfer and Indonesia’s demand that the territory be...
Sukarno announces Trikora to oppose Dutch control of West New Guinea
📅 19 December 1961Sukarno called for the mobilization of Indonesians to “liberate” West New Guinea from Dutch rule. The language of anti-colonial liberation overlapped with Indonesia’s claim to the territory, while...
Netherlands and Indonesia sign the New York Agreement on West New Guinea
📅 15 Augustus 1962The agreement arranged a transfer from Dutch administration to a United Nations authority and then to Indonesia. It promised an act of self-determination, but Papuans were not parties to the...
General Assembly takes note of the West New Guinea agreement
📅 21 September 1962The General Assembly adopted Resolution 1752 (XVII), taking note of the New York Agreement and authorizing the Secretary-General to carry out UN responsibilities. The decision formalized a process...
UN administration transfers West New Guinea to Indonesia
📅 1 Mei 1963UNTEA transferred administration to Indonesia, ending Dutch colonial rule in the territory. The transfer preceded the 1969 Act of Free Choice and placed Papuans under Indonesian administration without...
Act of Free Choice process begins under Indonesian administration
📅 14 Juli 1969The process began through selected regional councils rather than a universal secret ballot. Indonesian officials and the UN representative conducted consultations in a context of military and...
Act of Free Choice process concludes
📅 2 Augustus 1969The final consultations ended with representatives declaring in favor of continued Indonesian control. The United Nations report acknowledged severe limitations in the process, and General Assembly...
Indonesia enacts special autonomy for Papua
📅 21 November 2001Law No. 21/2001 created a special autonomy framework for Papua after years of protest and conflict. Papuan leaders contested whether it delivered meaningful self-government; the law addressed the...