Although Puerto Rico is part of the United States, Spanish is the official language. Road signs are all written in Spanish. So, it’s a good idea to learn some Spanish before visiting the island.

In 1952, Puerto Ricans adopted a new constitution, which established the current relationship of Puerto Rico as a commonwealth of the United States. Under that arrangement, Puerto Rico shares many ...

A person carries the Puerto Rican flag. Joe Raedle/Getty Images. The complex relationship between the United States and Puerto Rico is intrinsically linked to Cuba and the Cold War.