Answer: A. The Wealth of Nations
The book, Wealth of Nations was written by Adam Smith and published in 1776. This book gained 36,331 citations and went on to be the second most cited book after “Das Kapital” by Karl Marx. The Wealth of Nations promoted the ideas of free enterprise and capitalism. This book is often argued to be the most important document published in 1776; the same year the Declaration of Independence was published.