This study examines the impact of economic integration on growth by constructing an economic integration index based on average Most Favoured Nations tariffs and the level of regional cooperation for the three trade blocs of Eastern and Southern Africa, namely COMESA, EAC and SADC. Furthermore, the study confirms this relationship using an intra-regional trade intensity index for each of these trade blocs. Based on extreme bounds analysis and drawing on the neoclassical and endogenous growth theories, robust conditioning variables for economic growth are identified. System Generalized Method...