Answer: Voltaire ----> wrote the<em> Treatise On Toleration</em>
Adam Smith ---> wrote <em>The Wealth of Nations</em>
Adam Smith ----> tried to understand the laws of economics using Newton's laws of motion
Voltaire ---> was a strong advocate of religious tolerance and freedom
Voltaire ---> believed in absolute freedom of speech.
Explanation: Voltaire and Adam Smith were both famous philosophers. Both of them lived mainly during the 18th century, which is known as "the century of reason". <u>While Voltaire wrote the</u><u><em> Treatise On Toleration</em></u><u> (1763), Adam Smith wrote </u><u><em>The Wealth of Nations</em></u><u> (1776)</u>. <u>Smith was greatly influenced by Newton's theories</u>, which he used to explain the laws of economics. On the other hand, during his life, <u>Voltaire focused on defending freedom of speech as well as freedom of religion</u>. In that way, Voltaire was in favour of spreading religious tolerance.