Explanation:

The central thesis of Smith's "The Wealth of Nations" is that our individual need to fulfill self-interest results in societal benefit, in what is known as his "invisible hand". This, combined with the division of labor in an economy, results in a web of mutual interdepencies that promotes stability and prosperity through the market mechanism. Smith rejects government interference in market activities, and instead states governments should serve just 3 functions: protect national borders; enforce civil law; and engage in public works (e.g. education).