From 1898 until the present time.
The US gained control of Puerto Rico through the settlement that followed the Spanish-American War in 1898.
Puerto Rico
The US took control of Puerto Rico and the Philippines as a result of the Spanish-American War, when the US fought Spain in a short war.
when the U.S. win the spanish American can war, Spain gave Puerto Rico as a "dont hurt us gift" Puerto Rico is a commonwealth to the U.S. we offered to add them to a 51st state.the U.S. would want to control Puerto Rico for its own purposes
They haven't, it is still a US Territory.
obama
Puerto Rico is an US territory. Puerto Rico use the US dollar($). All citizens born in Puerto Rico are US citizens.
Puerto Rico is a territory of the USA.
No countries were, only Spanish territories. They were Cuba, Puerto Rico, Guam, and the Philippines. Cuba and the Philippines are now countries today as they got their independence from the US, however, Puerto Rico and Guam are still American territories.
Spain.
They haven't. It remains a US Territory.
No, it's a non-incorporated US territory (or colony, if you wish).