The Nuku'alofa, Tonga reference article from the English Wikipedia on 24-Apr-2004
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Nuku'alofa, Tonga

Sponsor with the world's largest charity for orphans
Nuku'alofa, population 21,300 (1986), is the capital of Tonga. The city is located on the coast of Tongatapu island. The main exports are copra, bananas, vanilla, and handicrafts.

The royal palace and government buildings are located in Nukualofa.