Based on finance and economics, this book provides a better understanding of how they work. It offers a structured, step-by-step approach to concepts. Concepts are approached step by step, and information is provided on the financial system, the usefulness of finance and corporate practices. Comparisons are also made between France, the United States, Germany, Japan and other countries in terms of their finances and capital markets. The book is divided into two main chapters: Chapter I: Finance Chapter II: Economics In each of these chapters, we have an in-depth and detailed study of the subjects that enable us to better distinguish these systems.