The practice of political is necessarily as old as society itself. It is born when men began to speculate about the rules of conduct by which they should be governed and mature with the succeeding generations when they began to ask whether these rules by which their ancestors were governed ought to be accepted or ought to have been accepted in the past why some societies choose different rules from others whether it is possible to discover general rules of conduct which could or should be applicable to all societies.In answering these questions they go into the basic questions of purposes for which human societies exist and their relation to the purposes of human life itself. It is obviously a quest for a just and happy life for men assembled together in a territorially integrated society and as such the best form of relationship manifested in their governance that can ensure such a life.This quest has been incessantly going on for centuries together without reaching agreed conclusions. Nor is there any likelihood that men will ever do so for human civilisations are forever changing amd so do change their values .What seems true and even self-evident for one generation or one civilisation is frequently rejected by the succeeding generation.