Multiple choice What is the most influential and famous economics book ever? Wealth of Nations - Adam Smith Das Kapital - Karl Marx Leviathan - John Hobbes Principles of Political Economy and Taxation - David Ricardo Reveal answer Fill a bubble to check yourself A Correct answer Explanation Adam Smith's 'The Wealth of Nations' (1776) is widely considered the foundational text of modern economics and the first work to describe the principles of free-market capitalism.