The comparative assessment of the continuation of the constitutional foundations in the legal systems of Iran, France and the United States

The constitution allows the possibility of change and reappearance, albeit with different formalities, and is not constant and constant, as in other laws. The basic question is whether the concepts and principles enshrined in the constitution disappear completely and completely with the collapse of the existing regime and the establishment of the new regime, and there are new concepts and bases, or is this substitution a relative state of concepts? And if the state is relative, what are the implications of which roots in the course of the constitutional change? The study of changes in fundamental laws and the continuation of fundamental principles at various times in the US Constitution, which was not faced with regime change but under the influence of cyclical developments, as well as the French constitution that has experienced the most incidents and changes, as well as the new constitution of Iran, Compared to the former two countries, it leads us to the fundamental principles and foundations of the political, historical, social, cultural and many of the cyclical processes and ideologies and views of the philosophers of law and ... and the constitution A country has been rooted.