Which of the following is not a barrier to the smooth functioning of ECOWAS?

"Adequate population" is not a barrier to the smooth functioning of ECOWAS. ECOWAS (Economic Community of West African States) is a regional economic union made up of 15 West African countries that promotes economic integration and cooperation. While ECOWAS faces several challenges in achieving its goals, such as political crises and fear of domination, having an adequate population is not a barrier to its smooth functioning. Different currencies and languages can create obstacles to trade and communication, respectively, within the region. Political crises can destabilize governments and undermine regional cooperation. Fear of domination, particularly by larger and more powerful member states, can also impede progress towards economic integration.