Hello! I am a librarian in training so I'd be happy to answer your question. According to the CIA World Factbook, Gambia was colonized in 1664 by the United Kingdom. The CIA World Factbook provides information on every country's history and a lot of other fun statistics, so I would recommend checking it out. It's a free online source!
Feb 18 1965 was the year they gained independence. At that time it joined the commonwealth of nations.
18th Feb 1965
Feb. 18, 1965
The United Kingdom.
Belize gained complete independence from the United Kingdom.
Britain
United Kingdom
It gained it from the United Kingdom in 1922.
Independence from the United Kingdom 6th September 1968
Britain
Grenada achieved independence from the United Kingdom on February 7, 1974.
Belize, who gained independence from the United Kingdom in 1981.
Kenya gained independence from Great Britain.
Kingdom of Great Britain
The United States of America gained independence from England after fighting the revolutionary war.