The catching-up of countries in the Global South to productivity levels and living standards of the Global North is the exception. There are two main economic explanations for this. First, developing countries are pushed to low-tech-labor-intensive productions and tasks in global value chains....

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...