For integration to succeed, the intending bloc of nations must begin with integration efforts that are based on gradual, continuous and concrete achievements, to create de facto solidarity among community members. This is the theoretical premise on which this article is based. This perspective is also drawn from the normative framework of both the Constitutive Act of the African Union (AU) and the Treaty Establishing the African Economic Community. According to its objectives, the AU aims to form a union government, to be preceded by successful economic integration through regional economic communities (RECs). While there are several RECs in Africa, this article examines those in west and southern Africa, being among the more developed. The article discusses whether the RECs have achieved their objectives to the extent that would warrant discussion of, and efforts towards, the imminent formation of the “United States of Africa”.