This book examines how the existence of overlapping regional institutions has presented a daunting challenge to the workings of various Regional Economic Communities (RECs) on the African continent. The majority of the African countries are members of overlapping and, sometimes, contradictory RECs. For instance, in East Africa, while Kenya and Uganda are both members of EAC and COMESA, Tanzania, which is also a member of the EAC, left COMESA in 2001 to join SADC. In West Africa, while all former French colonies belong to ECOWAS, they simultaneously keep membership of UEMOA, an organization which is not recognized by the African Union (AU). Such multiple and confusing memberships create unnecessary duplication and dims the light on what ought to be priority. Various chapters in this book have therefore sought to identify and proffer solutions to related challenges confronting the workings of the RECs in different sub-regions of the African continent. The discourses range from security to the stock exchange, identity integration, development framework, labour movement and cross-border relations. The pattern adopted in the book involves devolution of related discussions from the general to the specific; that is, from the continental level to sub-regional case studies.