What is a land owned by another country called?

A colony. As in the British calling us "The Colonies". We fought a war of independance, and became an independant republic. In the colonial age, many European countries had colonies in the New World. Spain had Cuba and Puerto Rico. The French had Haiti, which was at that time one of the richest colonies in the New World, because of its Natural Resources. Colonies brought great wealth and prosperity to the European countries. Britain recently fought a war in the Faulklands to exercise it's right of ownership over that tiny island off the coast of Argentina.