The article discusses the history and evolution of currency systems, from gold to the Euro. It explores how money, interest, and banking have shaped monetary policies. The rise of central banking in England and the dominance of the Pound Sterling in the Gold Standard are highlighted. The Bretton Woods system's instability and the Euro's denationalized currency in the world economy are also examined. The research provides insights into the development of international monetary standards and the role of key currencies in shaping global economies.