Wealth of Nations Published

In March 1776, the Scottish philosopher Adam Smith published An Inquiry into the Nature and Causes of the Wealth of Nations, a long book that helped establish economics as a distinct field of study. Its central argument was that a nation's prosperity comes from the productive capacity of its people and the efficiency of its markets, not from stockpiles of gold and silver. The book became one of the most cited works in the history of economic thought, though its reputation as a simple manifesto for free-market capitalism is more a later invention than an accurate summary.

Smith wrote in the context of mercantilism, the dominant European policy framework of the time. Mercantilist thinkers held that national strength depended on accumulating precious metals, chiefly by exporting more than one imported. Governments granted monopolies, imposed tariffs and regulated trade to that end. Smith was a professor of moral philosophy at Glasgow and a leading figure of the Scottish Enlightenment. His earlier work, The Theory of Moral Sentiments (1759), explored human sympathy and ethics. He spent years on the new book, drawing on his travels in France, where he met leading thinkers known as the physiocrats, and on conversations with friends such as David Hume.

The book itself is wide-ranging. It opens with the division of labor, illustrated by a famous example of a pin factory in which specialized tasks dramatically raise output. Smith argued that individuals pursuing their own interests could, under the right conditions, promote the wider good as if guided by an "invisible hand," a phrase he used only sparingly. He criticized monopolies, restrictive trade rules and colonial privileges, and he argued that competition and expanding markets drive growth. Yet he also supported public education, defense, courts and certain public works, and he was openly suspicious of merchants and manufacturers who he thought conspired to raise prices.

The book appeared the same year as the American Declaration of Independence, and its critique of colonial trade restrictions found a ready audience. It sold steadily, went through several editions in Smith's lifetime, and influenced British policymakers, including debates over trade liberalization in the following decades. Later economists such as David Ricardo and John Stuart Mill built on or challenged its ideas, and the classical school of economics grew largely from its foundations.

Smith's legacy remains contested. Advocates of free markets have long claimed him as an intellectual ancestor, while others stress his concern for wages, his moral philosophy and his wariness of concentrated economic power. Historians generally agree that the book did not create capitalism, which was already developing, but gave it a systematic, influential description that shaped how later generations understood the economy.