What was Puerto Rico called before it was called Puerto Rico?
First Boriken, then San Juan Bautista and last Puerto Rico
Puerto Rico is an organized unincorporated territory of the United States. Its name in English is the Commonwealth of Puerto Rico. Its Spanish name is Estado Libre Asociado de Puerto Rico, which translates to English as the Free Associated State of Puerto Rico. So, Puerto Rico is sometimes called a Commonwealth in Free Association with the United States. But it is subject to the laws of the United States.
No one. Puerto Rico had just gained autonomy from Spain just before the Spanish-American War broke out. The United States occupied Puerto Rico during the brief war. Spain ceded the territory to the United States in 1898. Puerto Rico remains a territory of the United States (by consent of the Puerto Rican electorate) to this day.