Which of the following countries is not a member of ECOWAS?

Cameroon is not a member of ECOWAS. ECOWAS stands for the Economic Community of West African States, which is a regional intergovernmental organization established in 1975 with the aim of promoting economic integration and cooperation among its member states. As the name suggests, it is primarily focused on West African countries. Nigeria, Gambia, Sierra Leone, and Ghana are all West African countries and are members of ECOWAS. However, Cameroon is not a West African country and therefore is not a member of ECOWAS. Cameroon is located in Central Africa, and it is a member of a different regional intergovernmental organization called the Economic Community of Central African States (ECCAS). In summary, Cameroon is not a member of ECOWAS, while Nigeria, Gambia, Sierra Leone, and Ghana are all members of ECOWAS.