UNTC

Adopted by the West African Sub-regional Conference on Economic Co-operation, held at Accra from 27 April to 4�May�1967. )
The Articles of Association for the Establishment of an Economic Community of West Africa done at Accra on 4 May 1967 were concluded "pending the formal establishment of the Community" (preamble). Thereafter, two additional agreements were concluded: (1) the Treaty establishing the Community of West Africa, concluded at Abidjan on 17 April 1973 between the Ivory Coast, Mali, Mauritania, Niger, Senegal and Upper Volta (came into force on 1 January 1974 and deposited with the Government of Upper Volta); and (2) the Treaty of the Economic Community of West African States (ECOWAS), concluded at Lagos on 28�May 1975 between Benin, the Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, Togo and Upper Volta (came into force on 20 June 1975 and deposited with the Government of Nigeria.