to have application only in one of the two territories. This territorial difference of law was complicated further by the adjustment of the former boundary among contiguous provinces with respect to road access and language groups. Some of such statutes apply on one side only of a boundary which no longer exists.
The administration of Papua became open to United Nations oversight; a peaceful independence from Australia occurred on September 16, 1975, and close ties remain (Australia continues as the largest bilateral aid donor to Papua New Guinea). Papua New Guinea was admitted to membership in the United Nations on 10 October 1975.
A secessionist revolt in 1975–76 on Bougainville Island resulted in an eleventh-hour modification of the draft Constitution of Papua New Guinea to allow for Bougainville and the other eighteen districts to have quasi-federal status as provinces. A renewed uprising started in 1988 and claimed 20,000 lives until it was resolved in 1997. Following the revolt, the autonomous Bougainville elected Joseph Kabui as president. He was succeeded by his deputy John Tabinaman, who continued to be re-elected as leader until the election of December 2008, which James Tanis won.
Anti-Chinese rioting, involving tens of thousands of people, broke out in May 2009. The initial spark was a fight between Chinese and Papua New Guinean workers at a nickel factory under construction by a Chinese company. Native resentment against the numerous small businesses being run by Chinese led to the rioting
