Supranationalism: The term supranationalism refers to the process of countries voluntarily giving up some degree of sovereignty in order to work together towards common goals or address shared challenges.
Confederation: A confederation is a political system where several independent states join together for common purposes while retaining their separate identities and autonomy.
Regional Integration: Regional integration involves the cooperation and integration between neighboring countries within a specific geographic region, usually aimed at promoting economic growth, political stability, and social development.