Why are some Countries Rich and Others Poor?

There are 196 countries in the world. 25 of them are very rich, defined as having an average wealth per person of over $100,000 a year. But far more countries are quite poor, and some are very very poor. In the 20 poorest countries of the world, the per capita wealth is under a $1,000 a year, or under three dollars a day. Every country is now more or less on a path to growth, but the poor ones are growing very, very slowly. If Zimbabwe continues at its current growth rate, it will qualify as a ‘rich country’ in 2722 years.