Self-government, 1971-73
Following a March 1971 House of Assembly recommendation and Michael Somare's election as Chief Minister in the July 1972 general election, the territory achieved internal self-government on 1 December 1973 under the Whitlam government in Australia.[1]
· Administrative change
Papua New Guinea self-government, 1973
Following a House of Assembly recommendation in March 1971 and Michael Somare's election as Chief Minister in the July 1972 general election, Papua New Guinea achieved internal self-government on 1 December 1973.
The 1975 Constitution
The Constituent Assembly rejected a proposal to make Papua New Guinea a republic on 5 June 1975 (57 votes to 26) and formally adopted the Constitution on 15 August 1975, a month before independence.[2]
· Constitutional change
Adoption of the Constitution of Papua New Guinea, 1975
The Constituent Assembly rejected a proposal to make Papua New Guinea a republic on 5 June 1975, and formally adopted the Constitution on 15 August 1975, a month before independence.
Independence
The Papua New Guinea Independence Act, 1975, given Royal Assent on 9 September 1975, withdrew all Australian sovereignty over Papua New Guinea with effect from 16 September 1975, the date nominated by Papua New Guinea's own House of Assembly.[3]
· Declaration
Independence of Papua New Guinea, 1975
The Papua New Guinea Independence Act, 1975 withdrew all Australian sovereignty over Papua New Guinea with effect from 16 September 1975, the date nominated by Papua New Guinea's own House of Assembly, ending Australia's administration under the earlier League of Nations mandate and UN Trusteeship Agreement over the Territory of New Guinea.
United Nations membership
The Security Council unanimously recommended Papua New Guinea's UN membership on 22 September 1975, and the General Assembly admitted it on 10 October 1975.[4][5]
· Recognition
Admission of Papua New Guinea to the United Nations, 1975
The Security Council unanimously recommended Papua New Guinea's admission to the United Nations on 22 September 1975, and the General Assembly admitted it on 10 October 1975.
Sources for this page
Each number marks a specific claim. Notes give the source, its locator and how it relates to the claim.
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1.
Claim: In March 1971 the House of Assembly recommended that the territory seek self-government in the next parliament, a recommendation Australia agreed to; the territory adopted a flag and emblem in June 1971 and was renamed Papua New Guinea that July. At the July 1972 general election, Michael Somare was elected Chief Minister, pledging to lead the territory to self-government and then independence, and the Australian government under Gough Whitlam instituted self-government, achieved on 1 December 1973.
- Papua New Guinea (Wikipedia) link, History section. Source record
-
2.
Claim: On 5 June 1975 the Constituent Assembly rejected, by 57 votes to 26, an amendment to the draft constitution that would have made Papua New Guinea a republic upon independence, and formally adopted the Constitution on 15 August 1975.
- Papua New Guinea (Wikipedia) link, History section. Source record
-
3.
Claim: The Papua New Guinea Independence Act, 1975, given Royal Assent on 9 September 1975, recited that the Territory of New Guinea had been administered by Australia first under a League of Nations mandate and then, from 13 December 1946, under a UN Trusteeship Agreement approved by the General Assembly, and that "on 18 June 1975 the House of Assembly nominated 16 September 1975 as the date on which Papua New Guinea is to become independent," with the General Assembly having resolved on 13 December 1974 that the Trusteeship Agreement would cease on that date. Section 3 defined "Independence Day" as 16 September 1975, and Section 4 provided: "On the expiration of the day preceding Independence Day, Australia ceases to have any sovereignty, sovereign rights or rights of administration in respect of or appertaining to the whole or any part of Papua New Guinea."
- Parliament of Australia, Papua New Guinea Independence Act 1975 (No. 98 of 1975) (9 September 1975) link, Preamble and Sections 3-4. Government perspective or primary official source Source record
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4.
Claim: On 22 September 1975, at its 1841st meeting, the Security Council, having examined the application of Papua New Guinea, unanimously recommended to the General Assembly that it be admitted to UN membership.
- United Nations Security Council, Security Council resolution 375 (1975) (United Nations, 22 September 1975) link, resolution text. Source record
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5.
Claim: The General Assembly, at its 2383rd plenary meeting on 10 October 1975, having received the Security Council's recommendation and considered Papua New Guinea's application, decided to admit Papua New Guinea to United Nations membership.
- United Nations General Assembly, General Assembly resolution 3368 (XXX): Admission of Papua New Guinea to membership in the United Nations (United Nations, 10 October 1975) link, operative paragraph. Source record
Printed from https://independenceatlas.com/movements/papua-new-guinea/history · last substantive update 24 September 2026.