Here's a list of continental West African nations, their Colonial controllers and independence dates.
They didn't trade anything. Slaves were brought from Africa to the West Indies
French West Africa, French Equatorial Africa, French North Africa and French East Africa.
West Indies, Africa, and England.
If you are asking about allies of the World Wars , only the USA did not have African colonies.
liberia
Europeans wanted to form colonies in west Africa because it was a good trading spot
Mozambique (South-east Africa), Angola (South-west Africa), and Guinea-Bissau (West Africa).
They didn't trade anything. Slaves were brought from Africa to the West Indies
germany
Primarily rum.
French West Africa, French Equatorial Africa, French North Africa and French East Africa.
West Indies, Africa, and England.
Liberia. (Since the 1970's there haven't been any Colonies in West Africa, though).
West Africa was very close to the oceanic route to India.
If you are asking about allies of the World Wars , only the USA did not have African colonies.
liberia
Central, east and west Africa