Development Economics applies modern techniques of macroeconomic and microeconomic analysis to the study of the economic, social, environmental and institutional problems facing developing countries. It focuses on the determinants of poverty and underdevelopment, as well as on the policies that need to be implemented in order to improve the development of developing countries. As a set of public and private practices that support economic growth, development economics appears in its generality as a transversal knowledge, because it guides the participation of all actors in the development effort. The aim of this book is to explain the principles of development economics, and to identify the ways in which economic problems can be tackled. It is divided into three main sections.The first part introduces the major framers of the world economy; the second offers the essential concepts and principles of macroeconomics; and the third elucidates the major issues in international economics.