who is the father of Economics?

During the late 19th and early 20th centuries, a number of economists attempted to apply the principles of classical political economy to study the underlying cause and movement of markets. In particular, a few prominent economists in this period attempted to explain price fluctuations or trends in terms of changes in supply or demand under various assumptions. However, many thinkers argued that these theories failed to capture important features of markets that lead to long-run economic growth. One such thinker was John Stuart Mill who proposed a theory where consumers make rational decisions based on their desires but also take account of how other consumers will react before making their own purchase decision.