At independence, the most prosperous country of former french western africa was a. chad b. senegal c. côte d'ivoire d. benin

C. Côte d'Ivoire. At independence, the most prosperous country of former French Western Africa was Côte d'Ivoire

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast.