Globalization has transformed international trade, connecting economies worldwide through the exchange of goods, services, and ideas. This unit explores key concepts like comparative advantage, trade barriers, and foreign direct investment, tracing the historical evolution of global commerce from ancient trade routes to modern multinational corporations. The impact on American businesses is significant, offering expanded market opportunities but also presenting challenges. The unit examines major trade theories, global economic institutions, and ongoing controversies surrounding trade deficits, labor standards, and environmental concerns, while considering future trends shaped by emerging technologies and shifting economic power dynamics.