The

Economic Community of West African States The Economic Community of West African States (ECOWAS; also known as in French and Portuguese) is a regional political union, political and economic union of fifteen countries located in West Africa. Collectively, these countries comprise an ...

(ECOWAS) was created by the Treaty of Lagos on May 28, 1975, in

Lagos Lagos (Nigerian English: ; ) is the largest city in Nigeria and the List of cities in Africa by population, second most populous city in Africa, with a population of 15.4 million as of 2015 within the city proper. Lagos was the national ca ...

Lagos State Lagos State ( yo, Ìpínlẹ̀ Èkó) is a States of Nigeria, state in South West (Nigeria), southwestern Nigeria. Of the 36 States of Nigeria, states, it is both the List of Nigerian states by population, most populous and List of Nigerian state ...

Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...

. ECOWAS was established to promote cooperation and integration in order to create an economic and monetary union for promoting economic growth and development in

West Africa West Africa or Western Africa is the westernmost region of Africa. The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Maurit ...

State parties

– suspended from Community after 2008 coup d'état
– suspended from Community after 2009 auto-coup
- suspended from Community after 2010 elections"Cote d'Ivoire expelled from Ecowas"
''aljazeera.net'' 7 December 2010

Notes

1975 in Nigeria 20th century in Lagos Economic Community of West African States Treaties concluded in 1975 Treaties of Burkina Faso Treaties of Cape Verde Treaties of Ghana Treaties of Guinea Treaties of Guinea-Bissau Treaties of Ivory Coast Treaties of Liberia Treaties of Mali Treaties of Niger Treaties of Nigeria Treaties of Senegal Treaties of Sierra Leone Treaties of the Gambia Treaties of the Republic of Dahomey Treaties of Togo {{Nigeria-gov-stub