The Francophone Communauté unie des États de l'Afrique de l'Ouest (CEIAIO) was formed at the 1973 Lomé summit. Benin, Togo, Burkina Faso, Mali, Burkina Faso, Southern Niger, Guinea and Senegal formed it in 1974, It had a famine relief bureau by 1974, free trade zone in 1975, a common market and peace keeping corps in 1986, a customs union in 1987, an intergovernmental investment banking systen in 1990, a common currency in 1991 and a confederation in 1992.

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