Since the mid-1980s there has been an explosion of various forms of regionalist projects on a global scale. The widening and deepening of the European Union (EU) is the most pervasive example, but regionalism is also made visible through the revitalization or expansion of many other regional projects around the world, such as the African Union (AU), the Association of Southeast Asian Nations (ASEAN), the Economic Community of West African States (ECOWAS), the North American Free Trade Agreement (NAFTA), the Southern African Development Community (SADC), and the Southern Common Market (Mercosur).