This book focuses on international trade, economic development, and technology transfer, especially in relation to India. It uses simple models to discuss important topics in the last three decades. The main themes are the theoretical contributions and practical relevance for developing economies. The book is divided into sections covering trade patterns, income distribution, migration, protectionism, technology transfer, and foreign investment. It is written in an easy-to-understand way, making it useful for students, teachers, and researchers in developing countries to understand complex issues using simple models.