An Inquiry into the Nature and Causes of the Wealth of Nations is the magnum opus of the Scottish economist Adam Smith. It is a clearly written account of economics at the dawn of the Industrial Revolution, as well as a rhetorical piece written for the generally educated individual of the 18th century - advocating a free market economy as more productive and more beneficial to society.
The work is credited as a watershed in history and economics due to its comprehensive, largely accurate characterization of economic mechanisms that survive in modern economics; and also for its effective use of rhetorical technique, including structuring the work to contrast real world examples of free and fettered markets.