According to Adam Smith, the basis of prosperity is the division of labour. When people specialise, they get better at whatever they do, because they practice i

According to Adam Smith, the basis of prosperity is the division of labour. When people specialise, they get better at whatever they do, because they practice it, spend more time thinking about how to improve it, and don't spend time adjusting to different tasks. But specialisation is limited by the size of the market: if you are too specialised, then there aren't enough people who want what you do for you to make a living. But within a larger population, maybe there will be. Therefore, prosperity is driven by increased market size, including: globalization; increased human population; more people being raised out of poverty (and so can buy more). From a producer's point of view, these factors enable you to make a living by specialising in exactly what work you really want to do, that you find most satisfying and rewarding, that best suits your talents and ways of working.