| Entry into force: | 4 May 1967, in accordance with article 7 (2). |
| Registration: | 4 May 1967, No. 8623. |
| Status: | Parties: 12. |
| Text: | United Nations, Treaty Series, vol. 595, p. 287. |
Note: 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.|
|
| Participant | Definitive signature (s) |
| Benin | 4 May 1967 s |
| Burkina Faso | 4 May 1967 s |
| Gambia | 21 Nov 1967 s |
| Ghana | 4 May 1967 s |
| Liberia | 4 May 1967 s |
| Mali | 4 May 1967 s |
| Mauritania | 4 May 1967 s |
| Niger | 4 May 1967 s |
| Nigeria | 4 May 1967 s |
| Senegal | 4 May 1967 s |
| Sierra Leone | 4 May 1967 s |
| Togo | 4 May 1967 s |