A country which has many colonies is often called an empire. A colonist is a person from the metropolitan state who lives in a colony.
Colonial means having to do with a colony. Colonial land is land that belongs to the colony. A colonist is sometimes called a colonial. The philosophy of having colonies is called colonialism. There must be many people to start a colony. There are many colonies, or countries that were once colonies, in the world. Most countries that were once colonies of Britain are part of the British Commonwealth.
- http://www.un.org/Depts/dpi/decolonization/trust3.htm - Non-self governing territories as listed by the United Nations General Assembly in 2002