51st state
Guam (formally the Territory of Guam) is an unincorporated and organized territory of the United States. Located in the western Pacific Ocean, Guam is one of five American territories with an established civilian government.
Mariana Islands
The Marianas remained a Spanish colony under the general government of the Philippines until 1898, when, as a result of its loss in the Spanish–American War, Spain ceded Guam to the United States. Guam has retained a different political character from the Northern Marianas since this time. Following the Philippine–American War, Apolinario Mabini and other Filipino leaders were exiled to Guam in 1901.