A number of countries have a sub-group that travel a huge amount, and a majority that rarely does. Which is partly just wealth, but also just variation in how

A number of countries have a sub-group that travel a huge amount, and a majority that rarely does. Which is partly just wealth, but also just variation in how aware people are of the outside world. Few people are going to visit a country they have no interest in, and can't locate on a map.