Oceania encompasses the continent of Australia (population 25 million in 2019), the large cluster of islands of New Zealand  (4.5 million), and islands traditionally divided into three groups according to ethnic and cultural aspects: Polynesia (total population 680,000, many islands at 10,000 or less), including American Samoa (55,000), French Polynesia including Tahiti (280,000), Samoa (197,000), Tonga (104,000), the Cook Islands, Niue, the Tokelau Islands, Tuvalu and Wallis and Futuna Islands, each with 12,000 or less; Melanesia (total population 10.98 mi) including Fiji (…