Guam - officially the U.S. Territory of Guam, is an island in the Western Pacific Ocean and is an organized unincorporated territory of the United States. Its inhabitants are the Chamorros, who first populated the island approximately 4,000 years ago. It is the largest and southernmost of the Mariana Islands. The capital is Hagatna, formerly Agana (pronounced Agana). Guam's economy is mainly supported by tourism (particularly from Japan, Korea and China) and United States armed forces bases. The United Nations Committee on Decolonization includes Guam on the United Nations list of Non-Self-Governing Territories.