The Virgin Islands, often called the British Virgin Islands (BVI), is a British overseas territory located in the Caribbean to the east of Puerto Rico. The islands make up part of the Virgin Islands archipelago, the remaining islands constitute the U.S. Virgin Islands and the Spanish Virgin Islands. The official name of the country is still simply the "Virgin Islands", but the prefix "British" is often used to distinguish it from the neighbouring American territory which changed its name from the "Danish West Indies" to "Virgin Islands of the United States" in 1917. British Virgin Islands government publications had traditionally continued to commence with "The Territory of the Virgin Islands", and passports simply refer to the "Virgin Islands", but recently, more legislation now refers to the country as the "British Virgin Islands".