Regional integration is a research field and academic concept analyzing the multifaceted processes through which geographically proximate sovereign states increase interaction and cooperation, leading to varying degrees of convergence in policies, institutions, and economic systems. It investigates the drivers, forms, and consequences of interstate collaboration within a defined region, characterized by stages of integration from preferential trade areas to political unions, the development of supranational or intergovernmental institutions, and the potential pooling or delegation of sovereignty. The significance of studying regional integration lies in understanding its impact on economic development, political stability, social cohesion, and the collective management of shared challenges and opportunities among participating states.