Next country out and declaring that Bitcoin will be official currency in the country. Will the world's 183rd largest country, the small nation of Tonga with just over 100,000 inhabitants, north of New Zealand, become the second country in the world to make Bitcoin an official currency? Lord Fusitua, a member of the Tongan parliament, believes the country can follow El Salvador's example and accept Bitcoin as a legal tender. “Tonga is the most payment-dependent country on earth. Between 38% and 41.1% of our GDP, depending on which World Bank figures you use, are transfers, ”says Fusitua.