The vast majority of the world s poorest households depend on farming for their livelihoods. During the 1960s and 1970s, most developing countries imposed pro-urban and anti-agricultural policies, while many high-income countries restricted agricultural imports and subsidized their farmers. Both sets of policies inhibited economic growth and poverty alleviation in developing countries. Although progress has been made over the past two decades to reduce those policy biases, many trade- and welfare-reducing price distortions remain between agriculture and other sectors and within the agricultural sector of both rich and poor countries. Comprehensive empirical studies of the disarray in world agricultural markets appeared approximately 20 years ago. Since then, the Organisation for Economic Co-operation and Development has provided estimates each year of market distortions in high-income countries, but there have been no comparable estimates for the world s developing countries. This volume is the third in a series (other volumes cover Asia, Europe s transition economies, and Latin America and the Caribbean) that not only fills that void for recent years but extends the estimates in a consistent and comparable way back in time and provides analytical narratives for scores of countries that shed light on the evolving nature and extent of policy interventions over the past half-century. 'Distortions to Agricultural Incentives in Africa' provides an overview of the evolution of distortions to agricultural incentives caused by price and trade policies in the Arab Republic of Egypt plus 20 countries that account for about of 90 percent of Sub-Saharan Africa s population, farm households, agricultural output, and overall GDP. Sectoral, trade, and exchange rate policies in the region have changed greatly since the 1950s, and there have been substantial reforms since the 1980s. Nonetheless, numerous price distortions in this region remain, others have been added in recent years, and there has also been some backsliding, such as in Zimbabwe. The new empirical indicators in these country studies provide a strong evidence-based foundation for assessing the successes and failures of the past and for evaluating policy options for the years ahead.

This volume in the 'Distortions to Agricultural Incentives' series focus on distortions to agricultural incentives from a global perspective.

3. Investing in people.

The vast majority of the world's poorest households depend on farming for their livelihoods. During the 1960s and 1970s, most developing countries imposed pro-urban and anti-agricultural policies, while many high-income countries restricted agricultural imports and subsidized their farmers. Both sets of policies inhibited economic growth and poverty alleviation in developing countries. Although progress has been made over the past two decades to reduce those policy biases, many trade- and welfare-reducing price distortions remain between agriculture and other sectors and within the agricultural sector of both rich and poor countries. Comprehensive empirical studies of the disarray in world agricultural markets appeared approximately 20 years ago. Since then, the Organisation for Economic Co-operation and Development had provided estimates each year of market distortions in high-income countries, but there have been no comparable estimates for the world's developing countries. This volume is the third in a series (other volumes cover Africa, Europe's transition economices, and Latin America and the Caribbean) that not only fills that void for recent years but extends the estimates in a consistent and comparable way back in time and provides analytical narratives for scores of countries that shed light on the evolving nature and extent of policy interventions over the past half-century. 'Distortions to Agricultural Incentives in Asia' provides an overview of the evolution of distortions to agricultural incentives caused by price and trade policies in the 12 largest economies of East and South Asia. Together these countries constitute more than 95 percent of the region's population, agricultural output, and overall GDP. Sectoral, trade, and exchange rate policies in the region have changed greatly since the 1950s, and there have been substantial reforms since the 1980s, most notably in China and India. Nonetheless, numerous price distortions in this region remain and others have added in recent years. The new empirical indicators in these country studies provide a strong evidence-based foundation for assessing the successes and failures of the past and for evaluating policy options for the years ahead.

The paper investigates empirically the determinants of economic growth for a large sample of sub-Saharan African countries during 1981-92. The results indicate that (i) an increase in private investment has a relatively large positive impact on per capita growth; (ii) growth is stimulated by public policies that lower the budget deficit in relation to GDP (without reducing government investment), reduce the rate of inflation, maintain external competitiveness, promote structural reforms, encourage human capital development, and slow population growth; and (iii) convergence of per capita income occurs after controlling for human capital development and public policies.

For African cities to grow economically as they have grown in size, they must create productive environments to attract investments, increase economic efficiency, and create livable environments that prevent urban costs from rising with increased population densification. What are the central obstacles that prevent African cities and towns from becoming sustainable engines of economic growth and prosperity? Among the most critical factors that limit the growth and livability of urban areas are land markets, investments in public infrastructure and assets, and the institutions to enable both. To unleash the potential of African cities and towns for delivering services and employment in a livable and environmentally friendly environment, a sequenced approach is needed to reform institutions and policies and to target infrastructure investments. This book lays out three foundations that need fixing to guide cities and towns throughout Sub-Saharan Africa on their way to productivity and livability.

The book highlights proceedings from the Berlin 2008: Agriculture and Development conference held in preparation for the World Development Report 2008.