International economics deals with the effects of international differences in resources and preferences on economic activity, and the international institutions that influence them. It uses economic tools to analyze international trade and transactions. International economics is both a theoretical and applied field that considers models like comparative advantage. It also examines the welfare effects of trade and the roles of institutions like the IMF and World Bank. The scope of international economics includes topics like technical progress, capital flows, trade agreements, export promotion, international division of labor, price stability, and more. International trade allows countries to specialize, access a greater variety of goods, achieve economies of scale, transfer technology, create more jobs, and generate foreign reserves.