Trade liberalization is an economic policy framework and an academic concept concerned with the reduction or removal of barriers to the free flow of goods, services, and capital across national borders. As a research field, it investigates the drivers, processes, and multifaceted impacts of such policy changes on national economies, specific industries, labor markets, income distribution, and global economic integration. Its key characteristics involve the dismantling of tariffs, quotas, subsidies, and various non-tariff measures, while its significance stems from its crucial role in shaping international economic relations, promoting efficiency through comparative advantage, and influencing development trajectories and welfare outcomes worldwide.