From wikipedia about Guam
Guam (; Chamorro: Guåhan) 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. ".
The Chamorros, Guam's indigenous people, first populated the island approximately 4, 000 years ago. The island has a long history of European colonialism. First discovered by Europeans by Ferdinand Magellan on March 6, 1521, the first colony was established in 1668 by Spain
with the arrival of settlers including Padre San Vitores, a Catholic missionary. The island was controlled by Spain
until 1898, when it was surrendered to the United States as part of the Treaty of Paris following the Spanish-American War.
As the largest island in Micronesia and the only U. S. -held island in the region before World War II, Guam
was captured by the Japanese on December 8, 1941, hours after the bombing of Pearl Harbor, and was occupied for two and a half years.
During the occupation, the people of Guam
were subjected to acts that included torture, beheadings, and rape, and were forced to adopt the Japanese culture. Guam
was subject to fierce fighting when US troops recaptured the island on July 21, 1944, a date commemorated every year as Liberation Day.
Today, Guam's economy is supported by its principal industry, tourism, which is composed primarily of visitors from Japan
. Guam's second-largest source of income is the United States military.