How many countries constitute the Economic Community of West African States? By: Sunday|Published on: Nov 28|Categories: Government JAMB| 0 comments A. 16 B. 15 C. 13 D. 11 Correct Answer: Option B – 15 Users Also Read These:Through membership of the Economic Community of West…Which of the following is associated with the…The most active organ of the Economic Community of…The highest organ of the Economic Community of West…The Economic Community of West African States was…SEE ALSO Southern Nigeria was divided into Eastern and Western provinces for administrative purposes in ________?