Spain

Spain was a country prior to the Great War.

Background
Spain's colonial empire is mentioned in the Fallout intro, mentioning that the country "built an empire from its lust for gold and territory." The Cheyenne Mountain facility offers a Spanish language countdown. The Nuka-Express had Spanish language used when telling riders to stay clear of the doors. On a museum kiosk in the National Archives, the Spanish-American War is mentioned. Ada mentions that, swimming from the Commonwealth, the shore of Spain would be approximately 3,700 miles away.

Appearances
Spain is mentioned in Fallout, Fallout Tactics, Fallout 3, and in the Fallout 4 add-on Automatron.