Which countries will drive growth for the next 40 years? This column introduces a new Policy Insight in which Citi economists Willem Buiter and Ebrahim Rahbari investigate the likely future sources of global economic growth between 2010 and 2050. They come up with 11 global growth generators, i.e. 11 3Gs. Surprisingly, Brazil and Russia do not make the cut while two Africans countries are in.