@watch4thedrop

"Guam became a U.S. territory in 1898 and placed under the jurisdiction of the U.S. Navy. The Guam Organic Act of 1950 conferred U.S. citizenship on Guamanians and established the territory's government. The Act also transferred Federal jurisdiction over Guam from the U.S. Navy to the Department of the Interior. First elections were held in 1970."
https://www.doi.gov/oia/islands/guam