March 6, 1521Ferdinand Magellan arrives at Guam.
Guam is an organized, unincorporated territory of the United States located in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Guam is listed as one of 16 Non-Self-Governing Territories by the Special Committee on Decolonization of the United Nations. The island's capital is Hagåtña (formerly Agaña). Guam is the largest and southernmost of the Mariana Islands.