Title: Rafael Carrión Sr.
Content:  Banco Popular de Puerto Rico can trace its roots to 1893, when Puerto Rico was still a Spanish colony. That year, fifty-two stockholders provided the initial capital to establish the Sociedad Anonima de Economias y Prestamos ( The Anonymous Savings & Loan Society), a savings bank for the poor. However the United States invaded Puerto Rico during the Spanish–American War in 1898, and the island was annexed by the U.S. under the terms of the Treaty of Paris of 1898 which was ratified on December 10, 1898. Almost immediately, the United States began the "Americanization" process of Puerto Rico. The U.S. occupation brought about a total change in Puerto Rico's economic and political life. Amongst the many industries appropriated and controlled by the U.S. Government, were Puerto Rico's financial and banking institutions. In 1913, the United States Congress 
Title: Military history of Puerto Rico
Content:  Puerto Rico, in the short-lived revolution known as the Grito de Lares and culminating with the Intentona de Yauco. The island was invaded by the United States during the Spanish–American War. After the war ended, Spain officially ceded the island to the United States under the terms established in the Treaty of Paris of 1898. Puerto Rico became a United States territory and the "Porto Rico Regiment" (Puerto Rico's name was changed to Porto Rico) was established on the island. Upon the outbreak of World War I, the U.S. Congress approved the Jones–Shafroth Act, which extended United States citizenship (the Puerto Rican House of Delegates rejected US citizenship) with limitations upon Puerto Ricans and made them eligible for the military draft. Since then, as citizens of 
Title: Rucio
Content:  Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of Rucio barrio was 2,233.
Title: Puerto Ricans in World War I
Content:  Puerto Ricans and people of Puerto Rican descent have participated as members of the United States Armed Forces in every conflict in which the United States has been involved since World War I. One of the consequences of the Spanish–American War was that Puerto Rico was annexed by the United States in accordance with the terms of the Treaty of Paris of 1898, ratified on December 10, 1898. On January 15, 1899, the military government changed the name of Puerto Rico to Porto Rico (On May 17, 1932, the U.S. Congress changed the name back to "Puerto Rico"). On March 21, 1915, the first shots by the United States in 
Title: Culture of Puerto Rico
Content:   Culturally, Puerto Rican sentiment for the U.S. tends to vary between emulation and opposition, a result of the complicated socio-political relationship between the two. Since establishment as an unincorporated territory of the United States in 1898, traditional economics, social structure, nationalism, and culture in Puerto Rico has been affected by Puerto Rico's relationship with the U.S. Before the United States captured Puerto Rico from Spain in 1898, the colony was agriculture based. Most worked on sugar cane, tobacco, or coffee plantations. Through the beginning of the 20th century, Puerto Ricans remained agricultural. Operation Bootstrap, an operation of the United States and 
Title: Isabel González
Content:  the right of citizenship — did not automatically apply, because the island belonged to the U.S., but was not part of the U.S. On January 15, 1899, the military government changed the name of Puerto Rico to Porto Rico (On May 17, 1932, the U.S. Congress changed the name back to "Puerto Rico") and the island's currency was changed from the Puerto Rican peso to the American dollar, integrating the island's currency into the U.S. monetary system. The United States exerted its control over the economy of the island by prohibiting Puerto Rico from negotiating commercial treaties with other nations, from determining tariffs, and from shipping goods to the mainland on other than U.S. carriers.
Title: El Hombre Y Sus Sueños
Content:  Puerto Rico was a Spanish colony. After War of 1898, Puerto Rico was ceded to the United States. Now, Puerto Rico is a commonwealth of the United States—neither statehood nor independence. In the 1950s, many Puerto Rican Migrants moved within the United States. "Marqués views submission to United States domination as a forfeiture of political sovereignty for economic gain" (Martin). After the 1940s, the United States started providing structure to make Puerto Rico industrial. Marqués, as a member of the Nationalist Party, opposed the United States' involvement in Puerto Rico in this way. In his work, Marqués often commented about the politics of his time in regards to the colonization and control of Puerto Rico in this way.
Title: Puerto Rico
Content:  The United States and Puerto Rico began a long-standing metropolis-colony relationship. This relationship has been documented by numerous scholars, including U.S. Federal Appeals Judge Juan Torruella, U.S. Congresswoman Nydia Velázquez, Chief Justice of the Puerto Rico Supreme Court José Trías Monge, and former Albizu University president Ángel Collado-Schwarz. In the early 20th century, Puerto Rico was ruled by the U.S. military, with officials including the governor appointed by the president of the United States. The Foraker Act of 1900 gave Puerto Rico a certain amount of civilian popular government, including a popularly elected House of Representatives. The upper house and governor were appointed by the United States.  Its judicial system was reformed to bring it into conformity with the American federal courts system; a Puerto Rico Supreme Court and a United States District Court for the unincorporated territory were established. It 
Title: Postage stamps and postal history of Puerto Rico
Content:  An independent postal service under U.S. authority was established March 15, 1899. But with the Foraker Act of 1900, the postal service of Puerto Rico ceased to be a separate adjunct of the U.S. and was assimilated into the United States postal system. Stamps were originally overprinted with the spelling Anglicized to "PORTO RICO". Later, postage dues, and in 1900 regular issues, were overprinted with "PUERTO RICO". Likewise, postal cards and stamped envelopes were also initially overprinted "PORTO RICO" and later "PUERTO RICO". U.S. stamps are now used on the island.
Title: Statehood movement in Puerto Rico
Content:  Following the Spanish–American War, Puerto Rico was ceded to the United States in 1898, through the signing of the Treaty of Paris. Puerto Rico became an unincorporated, organized territory of the US through a series of judicial decisions by the Supreme Court of the United States, collectively known as "The Insular Cases" and the enactment of several statutes by Congress. In 1900, the U.S. Congress enacted the Foraker Act, establishing a civil government in the territory and then in 1917, Puerto Ricans were granted US citizenship, by the enactment of the Jones-Shafroth Act. The Office of the President is responsible for policy relations between the United States and Puerto Rico, although according to the Territorial Clause of Constitution of the United States of America "The Congress shall have power to dispose of and make all needful Rules and Regulations respecting the Territory or other Property belonging to the United States...". In 1952, voters in Puerto Rico approved a new constitution proposed by Gov. Luis Munoz Marin; this led to the territory being designated as a commonwealth.

Question: who did puerto rico belong to before the u.s?
Answer: Taíno.
indigenous Taíno people.
Spain.