Autonomous Region of Bougainville
…largest island is Bougainville Island, while the region also includes Buka Island and a number of outlying islands and atolls. The provisional capital is Buka, on Buka Island. In 2024, the region had a population of 367,093 people. The lingua franca of Bougainville is Tok Pisin, while a variety of Austronesian…