The Federation of Saint Christopher and Nevis (; also known as the Federation of Saint Kitts and Nevis), located in the Leeward Islands, is a federal two-island country in the West Indies. It is the smallest sovereign state in the Americas, in both area and population.
The capital city and headquarters of government for the federated state is Basseterre on the larger island of Saint Kitts. The smaller island of Nevis lies about 2 miles (3 km) southeast of Saint Kitts, across a shallow channel called "The Narrows".
Historically, the British dependency of Anguilla was also a part of this union, which was then known collectively as Saint Christopher-Nevis-Anguilla. Saint Kitts and Nevis are considered to be geographically part of the Leeward Islands. To the north-northwest lie the islands of Sint Eustatius, Saba (the Netherlands), Saint Barthélemy, Saint-Martin/Sint Maarten and Anguilla. To the east and northeast are Antigua and Barbuda, and to the southeast is the small uninhabited island of Redonda, and the island of Montserrat, which currently has an active volcano (see Soufrière Hills).
Saint Kitts and Nevis were among the first islands in the Caribbean to be settled by Europeans. Saint Kitts was home to the first English and French colonies in the Caribbean, and thus has also been titled "The Mother Colony of the West Indies".