This book, "Mercantilism to the Intriguing Realm of Quantum Economics: A Journey into the Hallmarks of Econophysics," serves as a comprehensive guide to this fascinating evolution, merging traditional and contemporary perspectives. The book covers innovative fields like econophysics and quantum economics, addressing real-world economic challenges and providing fresh insights into policy analysis. It also explores the historical progression of economic thought and emphasizes the role of information theory and the contributions of the MSME sector to national development. Additionally, it addresses contemporary topics like green innovation, digital agriculture, and the impact of young individuals' investment behavior on today's economic landscape. The discussion concludes with an evaluation of Keynesian concepts and regulatory challenges in a globalized economy.