The majority of the world's poor, by income poverty and multi-dimensional poverty, now live in countries officially classified by the World Bank as middle-income countries. Of course nothing happens when a country crosses a (somewhat) arbitrary threshold in per capita income but it does matter...

What has happened to inequality between and within countries since 1990? In this paper we explore who have been the winners and losers from global growth since 1990. We find that falls in total global inequality in the last 30 years are predominantly attributable to rising prosperity in China....

"Economics of Agricultural Development examines the causes, severity, and effects of poverty, population growth, and malnutrition in developing countries. It discusses potential solutions to these problems, progress made in many countries in recent years, and the implications of globalization...