IntroductionTonga (tŏngˈgə) [key], officially Kingdom of Tonga, island kingdom (2005 est. pop. 112,000), 270 sq mi (699 sq km), South Pacific, c.2000 mi (3,220 km) NE of Sydney, Australia. Tonga is the only surviving independent kingdom in the South Pacific. Nukualofa is the capital.
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