The Romans invented a law code detailing the rights and duties of citizens and defined the legal process.
The legal system we use today is very mostly based on Roman laws. They included the rights and duties of citizens which did in fact define the legal process and is widely used in common law. The Western governments used many Roman law ideas and it outlines how we deal with law today.
Answer:
In the substantially revised fourth edition of this widely-used book, Norman Barry provides a comprehensive introduction to contemporary political theory including systematic coverage of the philosophical background to contemporary debates between liberals, conservatives, communitarians, socialists, and feminists