“The greatest improvements in the productive powers of labor, and the greater part of the skill, dexterity, and judgment, with which it is anywhere directed or applied, seem to have been the effects of the division of labor.”
The definition of labor division made by Adam Smith, renowned as the father of modern economics, in the opening chapter of his book Wealth of Nations, has been serving as a cornerstone for world economics since the industrial revolution.
Just as an American scholar remarked, Wealth of Nations is one of the sources that powered the miracle of the US development.