The work, divided in three parts, the first one dedicated to roman Law, the second one to the law of the Greeks, and the third one to the juridical world of the Pharaohs, aims at studying the relations between regal power and the creation and application of the rules, in the most ancient Mediterranean. At first, the ways of emersion of the earliest branch of Roman law, the so called ius Quiritium, is investigated by underlying the main role played by the kings more than the consuetudinary rules, as regards the inclusions of the uses of the ancient inhabitants of the Septimontium, i.e. the Quirites; some single institutes of ius quiritium are more deeply studied, such as the detestation sacrorum, the testamentum comitiis, the mancipium. The...