How did the ancestors of Pacific islanders settle there?

Mainly by boat, they have strong sailing ability. In addition, the ice age was not an ice shelf, but a land bridge after the sea level fell. There was such a migration in the last ice age. When modern people spread to Oceania, they entered kalimantan island in Southeast Asia at about 46kBP, settled in New Guinea at about 40kBP, occupied northern and southern Australia during the period of 47-40kBP, and entered Tasmania at about 30kBP. The further spread to further islands was mainly in the Holocene, especially in the Rapita cultural period (about 65438 BC+0600 BC-500 BC). From about 1550 BC to about 1400 BC, the Rapita cultural site appeared near Bismarck Islands. After about 200-300 years of activities, it began to spread to the southeast. Existing archaeological data show that the Lapita culture appeared in the eastern Solomon Islands at the latest, about 1200 BC. Almost at the same time, the residents of La Pita culture crossed the sea area of more than 800 kilometers between Santa Cruz and Fiji, arrived in Tonga and Samoa in West Polynesia, and discovered and colonized the island of New Caledonia around 1000 BC at the latest. If we take 20 years as a generation, the Lapita people will complete the great migration of 4,500 kilometers 15-20 generations, and each generation will expand eastward or southward by 80-300 kilometers on average. There are many research documents in this field. For example: Barry Rolett, Jiao Tianlong, Lin Gonggong: Navigation and Communication in the Taiwan Province Strait and the Origin of Austronesian Languages in Neolithic Age, Fujian Wenbo,No. 1, 2002. Chen Zhongyu: On Prehistoric Marine Nationalities in the Southeast Coast of China, Archaeology and Cultural Relics, No.2, 2002. Jiao Tianlong: Prehistoric Culture in the Southeast Coast and the Spread of Austronesian Languages, Cultural Relics of the Central Plains, No.2, 2002. Jiao Tianlong: Lapita Culture and Prehistoric Archaeology in Southeast Asia, Archaeological Research in Southeast Asia (Series 3), Xiamen University Press, 2003, 1 1. Wu Chunming: Prehistoric Traffic between Southeast China and the Pacific Ocean, Southern Cultural Relics, No.2, 2008. Wu Chunming: The significance of "mother ship" in the Pacific cultural history of Shidong, Taijiang, Qiandongnan, Guizhou Ethnic Studies, No.5, 2008. Wu Chunming: Ethnic Archaeological Excavation of Prehistoric Sailboats, Research on Maritime Traffic History, No.2, 2009. These are relatively easy to find. More foreign language books, such as Peter Bellwood's The Process and Mechanism of the Origin and Spread of Austronesian Languages, have always been one of the most important topics in Pacific archaeology.

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