The Commonwealth is an association of sovereign nations, most of which were former territories of the British Empire. These nations cooperate on various issues, including economic development, trade, and cultural exchange.

A. Lesotho - Lesotho is a member of the Commonwealth. It joined in 1966 after gaining independence from British rule.

B. Jamaica - Jamaica is a member of the Commonwealth. It gained independence from the United Kingdom in 1962 and became a member of the Commonwealth shortly afterwards.

C. Kenya - Kenya is a member of the Commonwealth. It gained independence from British colonial rule in 1963 and joined the Commonwealth.

D. Gabon - As at the time this question was set, Gabon was not a member of the Commonwealth. Gabon is located in Central Africa and was never a British colony and did not have historical ties to the British Empire. However, in 2022, they were admitted into the Commonwealth.