Differences in the choices of trade and macro policies, both by developing countries and by developed countries towards developing countries, have been critical in determining the overall performance of developing countries. All too often, the performance of developing countries has not been assessed using appropriately conducted studies. The papers in this book are chosen to bridge this gap and show how a quantitative approach to policy evaluation can help resolve controversies and explain the choice of observed policies.The book brings together carefully selected papers that assess the impacts of various trade and macro policies, by quantifying the policies of developing countries at the macro level (exchange rate, investment, savings) and at the sector level (trade and industrial policies), in addition to policies of developed countries towards developing countries (trade preferences, quotas, VERs and migration policies). Facets of the political economy of trade, migration, and climate policies are explored (such as the enlargement of the EU, the rise of regionalism and how it can ease the pains of adjustment to trade liberalization, openness and inequality). Growing tensions between trade and the environment are also investigated. In short, this book covers a wide area of events ranging from external and internal shocks to external and internal policies, showing how the consequences of these events can be brought to rigorous quantitative analysis.