To underscore her relative importance within the African continent, Nigeria has played a prominent role in the formation and continued existence of the

Nigeria has played a prominent role in the formation and continued existence of the Economic Community of West African States (ECOWAS). ECOWAS is a regional intergovernmental organization that promotes economic integration, political cooperation, and regional security among its 15 member states in West Africa. Nigeria is one of the founding members of ECOWAS and has been instrumental in its establishment, funding, and functioning. The organization was established in 1975, and Nigeria has been a key player in shaping its policies, programs, and activities. Therefore, the answer to the question is "Economic Community of West African States (ECOWAS)."