Dated events associated with this case. Each event is a shared record: the same event appears identically wherever it is relevant.
· Declaration
Bougainville’s Interim Provincial Government declared independence unilaterally shortly before Papua New Guinea became independent; the national parliament suspended it.
Significance here: An early, unilateral independence declaration; the national parliament suspended the provincial government that made it, and a settlement within Papua New Guinea followed in 1976.
· Conflict episode
An armed conflict that began around the Panguna mine, closed it in 1989 and lasted until a truce in 1997.
Significance here: The conflict, for many fought over independence, shaped the peace process that later provided for autonomy and a referendum.
· Declaration
After the PNG withdrawal, the BRA and the Bougainville Interim Government declared Bougainville independent as the Republic of Me’ekamui.
Significance here: A second unilateral declaration of independence, made during the conflict; it did not produce a functioning state.
· Agreement
The Government of Papua New Guinea and Bougainville leaders agreed on autonomy, a deferred referendum on Bougainville’s future political status and weapons disposal.
Significance here: Created the framework for autonomy and for the 2019 referendum, and made the referendum outcome subject to ratification by the National Parliament.
· Constitutional change
Under a constitution adopted in 2004, Bougainville elected its first autonomous government, led by President Joseph Kabui.
Significance here: Began autonomous government within Papua New Guinea and started the clock for the referendum window.
· Referendum or popular consultation
Bougainvilleans chose between greater autonomy and independence; 176,928 of 181,067 ballot papers counted were for independence.
Significance here: Recorded an overwhelming vote for independence. The result is non-binding and awaits ratification by the National Parliament; it did not by itself make Bougainville independent.
· Agreement
The PNG and Bougainville governments opened formal consultations on the referendum outcome and restated that the National Parliament takes the final decision.
Significance here: Started the consultations required before the referendum result could go to the National Parliament.
· Negotiation
Papua New Guinea’s parliament set a three-quarters threshold for ratification and received the referendum result, but had not voted by 28 August 2026.
Significance here: Brought the 2019 result before the National Parliament for the first time; ratification and any transition remain undecided.
Dates show their real precision. Approximate or uncertain dates are labelled and never converted into an exact day.