Answer:
Karl Marx- Karl Marx was a German philosopher during the 19th century. He worked primarily in the realm of political philosophy and was a famous advocate for communism. He cowrote The Communist Manifesto and was the author of Das Kapital, which together formed the basis of Marxism. Marx's most popular theory was 'historical materialism', arguing that history is the result of material conditions, rather than ideas. He believed that religion, morality, social structures and other things are all rooted in economics, in his later life, he was more tolerant of religion.
Adam Smith- Smith argued against mercantilism and was a major proponent of laissez-faire economic policies. In his first book, The Theory of Moral Sentiments, Smith proposed the idea of an invisible hand, the tendency of free markets to regulate themselves using competition, supply and demand, and self-interest. Adam Smith was an economist and philosopher who wrote what is considered the "bible of capitalism," The Wealth of Nations, in which he details the first system of political economy. Smith believed government should provide more than police and fire protection. He supported public works and education.