Guam, officially the Territory of Guam, is an island in the Western Pacific Ocean and is an organized unincorporated territory of the United States. It is one of five U.S. territories with established civilian government. The island's capital is Hagåtña (formerly Agana). Guam is the largest and southernmost of the Mariana Islands.
The Chamorros, Guam's indigenous inhabitants, first populated the island approximately 6,000 years ago. The island has a long history of European colonialism beginning in 1668 with the arrival of Spanish settlers including Padre San Vitores, a Spanish missionary. The island was captured from Spain by the United States during the Spanish American War in 1898. As the largest island in Micronesia and the only American-held island in the region before World War II, Guam was occupied by the Japanese between December 1941 and July 1944. Today, Guam's economy is mainly supported by tourism (primarily from Japan) and U.S. military bases. Guam lies between 13.2°N and 13.7°N and between 144.6°E and 145.0°E, and has an area of 209 square miles (541 km²), making it the 32nd largest island of the United States. It is the southernmost island in the Mariana island chain and is the largest island in Micronesia. This island chain was created by the colliding Pacific and Philippine tectonic plates. The Marianas Trench, a deep subduction zone, lies beside the island chain to the east. Challenger Deep, the deepest surveyed point in the Oceans, is southwest of Guam at 35,797 feet (10,911 m) deep. The highest point in Guam is Mount Lamlam, which is 1,332 feet (406 m). The island of Guam is 30 miles (48 km) long and 4 mi (6 km) to 12 mi (19 km) wide. The island experiences occasional earthquakes due to it being on the western edge of the Pacific Plate and near the Philippine plate. In recent years, earthquakes with epicenters near Guam have had magnitudes ranging from 5.0 to 8.7. Unlike the Anatahan volcano in the Northern Mariana Islands, Guam is not volcanically active. However, due to its proximity to Anatahan, vog does occasionally affect Guam.
The northern part of the island is a forested coralline limestone plateau while the south contains volcanic peaks covered in forest and grassland. A coral reef surrounds most of the island, except in areas where bays exist that provide access to small rivers and streams that run down from the hills into the Pacific Ocean and Philippine Sea. The island's population is most dense in the northern and central regions. |
