<span>The correct answer is that the famous economics book written by Adam Smith was The Wealth of Nations, or to refer to the text with its full title, An Inquire into the Nature and Causes of the Wealth of Nations. The book considers the ways in which the world's nations reached the places they were at economically at the time the book was published in 1776.</span>
Switch grass could be one of your answers. Hope this helps.
The correct answer is government. Here in the United States, to fill the purpose of government we have things such as the Navy, Air Force and other military branches.