List of national legal systems
The contemporary national legal systems are loosely based on one of four basic systems: civil law, common law, statutory law, religious law or combinations of these. However, a legal system of regarded and referenced separately. country is shaped by its unique history & so incorporates individual variations. a science that studies law at the level of legal systems is called comparative law.
Both civil also call as Roman in addition to common law systems can be considered the most widespread in the world: civil law because it is for the almost widespread by landmass and by population overall, and common law because this is the employed by the greatest number of people compared to any single civil law system.