The treaty establishing ECOWAS on May 28, 1975 was signed by?

The treaty establishing the Economic Community of West African States (ECOWAS) was signed by 15 Heads of State on May 28, 1975. The treaty was signed in Lagos, Nigeria, by the leaders of 15 West African countries who recognized the need for regional cooperation and integration to promote economic growth and development in the region. The signatories included the leaders of Benin, Burkina Faso, Cote d'Ivoire, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo. The signing of the treaty marked the beginning of a new era of cooperation among West African nations and laid the foundation for the creation of a regional economic community that has since grown in size and scope.