No, it was the Spanish American War.
In 1898.
The U.S. acquired Puerto Rico from Spain after the Spanish-American War.
In 1898.
In 1898 from Spain.
From Spain
The Phillipines, Guam, Puerto Rico and Cuba, the Cubans were quickly given their independence and the Philippines achieved that status after WW2.
In 1898 as spoils of the Spanish-American War.
The Spanish-American War.
Puerto Rico was ceded to the United States on 1898 as a result of the ratification of the Treaty of Paris.
Cuba, Puerto Rico, Guam and the Philippines
The mutation of the "o" in the Latin roots to the "ue" in modern Spanish was something that developed after the first colonization of Puerto Rico took place. As a result, the first name of Puerto Rico was Porto Rico. (This was very quickly replaced by the Puerto Rico.)
It was ceded to the the US by Spain in 1898 after the Spanish-American War.