Africa news BBC Africa NewsWEST AFRICAN COUNTRIES CHOOSE NEW ‘ECO’ SINGLE TRADE CURRENCY Lagos, Nigeria (CNN)As part of its plans to make Africa a more integrated continent, leaders of the Economic Community of West African States (ECOWAS) have adopted the name ‘ECO’ for a planned single currency to be used in the region. The 15 member group announced at the end of an ECOWAS summit in Abuja, Nigeria’s capital on Saturday.