Abuja, Nigeria

Abuja is also one of the most important cities in Africa. It is the "capital" of West Africa, the Economic Community of West African States (ECOWAS), as well as the capital of Nigeria, which is the world's seventh largest country by population and which is English-speaking. ECOWAS uses the West African CFA franc as its currency although Nigeria uses the "naira". There is a plan or hope to replace these with a new currency called the "eco" by 2015.