Mercantilists predicate the prosperity of a nation on mines, and deposits of silver and gold that the country has instead of the power of production. Adam Smith is the first critic of the mercantilist doctrine. One of the subjects he inquires is what a country’s prosperity depends on. According to the economics theory that he based on a criticism of Mercantilism, a nation’s prosperity depends on the nation’s production power, whereas Mercantilists think that a nation’s prosperity depends on the mines the nation has. That is, a nation’s prosperity depends on the power of producing the wealth needed for a comfortable and untroubled life.