What are the three main regions of islands in the Pacific? What island nations belong to each of the three main regions?

What are the three main regions of islands in the Pacific? What island nations belong to each of the three main regions?
What are the traditional methods of making a living on the Pacific islands?
Where are the main mountain ranges in Antarctica? What is significant about Mt. Erebus?
What seven countries have laid claims to the territory of Antarctica?
Why are so many islands in the Pacific governed by the United States?

Chpater 13 https://open.lib.umn.edu/worldgeography/part/chapter-13-the-pacific-and-antarctica/
(Book)

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