Gunma (Permian Extinction: Civilization)

From Alternative History

Gunma is a tropical island nation that is a vacationland and a world trading post, resulting in numerous resorts and skyscrapers (and seaports, and warehouses) dotting the country. Its location in between the Central and Southern Seas puts it effectively at the center of the world. Its maritime location gives it a climate that is wetter on one side of the islands and drier on the other side (a la Hawaii), and so there are pipeworks shifting water from one side of the isles to the other.