(gwäm), Chamorro GuÅhan , officially Territory of Guam, the largest, most populous, and southernmost of the Mariana Islands (see also Northern Mariana Islands ), an unincorporated territory of the United States (2015 est. pop. 162,000), 209 sq mi (541 sq km), W Pacific. The southern part of the island is mountainous, rising on Mt. Lamlam to 1,332 ft (406 m). The capital, HagÅtña (Agaña), on the central W coast, is the seat of government, and Apra Harbor, a large U.S. naval base, is nearby. Dededo, in NW Guam, is the most populous municipality. Andersen Air Force Base is in Yigo, in NE Guam. The interior of the island is dense jungle; most of the villages are on the coast. Guamanians are U.S. citizens but cannot vote in U.S. elections. Guam's permanent inhabitants are predominantly of native Chamorro stock (37%) or Filipino descent (26%); the rest of the population mainly consists of other Pacific Islanders, Caucasians, and other persons of Asian descent. The people are overwhelmingly…