On 10 December 1898.
In 1898.
Puerto Rico was one of the islands ceded by Spain to the United States as part of the Treaty of Paris of December 10, 1898, ending the Spanish-American War.
Puerto Rico is not an American state. It has had popular referendums to do so, unsuccessfully.
Spain lost territory in 1898 as opposed to gaining it. Cuba, Puerto Rico, Guam, and the Philippines were bequeathed by Spain to the United States according to the Treaty of Paris of 1898.
Puerto Rico has been part of the United States since 1898.
Spain from 1493 until 1898 and the United States from 1898 to the present.
Puerto Rico was ceded to the United States on 1898 as a result of the ratification of the Treaty of Paris.
Yes. Puerto Rico is a commonwealth territory of the United Stats. Puerto Rico has been a U.S. territory since Spain ceded it to the United States in 1898 at the Treaty of Paris ending the Spanish-American War.
Puerto Rico is has been part of the United States since 1898. The United States entered World War 1 in 1917. So, yes. Puerto Ricans fought proudly in WW1.
Puerto Rico is not independent. It is a United States territory because it was ceded by Spain to the US in 1898.
In 1898 as spoils of the Spanish-American War.