How did the Pacific & other islands get settled?

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iirc most genetic evidence evidence suggests a three stage migration: first an original rush of humans in the Paleolithic that colonised the continent that now forms Australia and Guinea; then a few thousand yearsbefroe common era a group originating in Taiwan (now making up the Taiwanese aboriginals) that developed canoes moved fairly quickly through the Philippines, Guinea, the Solomon Islands, Fiji etc (some of them moved westwards in Indonesia, and colonised Madagascar). These are the relatively light skinned Pacific Islanders (Maori, Hawaiians, Easter Islamders etc); who were followed by Melanesians from Guinea, who you tend to find on Vanuatu, the Solomon Islands, Fiji, Tonga etc.