
Common law and Roman law are two distinct legal systems with different sources and methods of enforcement. Common law, developed in England, is based on judicial precedent and emphasizes case law and the principle of stare decisis. Roman law, originating from ancient Rome, is a codified system that emphasizes legislation and the systematic organization of legal principles. Common law is flexible and adaptable, allowing judges to interpret and apply the law according to the circumstances of each case. In contrast, Roman law provides a structured framework with written statutes and codes, leaving less room for interpretation by judges. These differences have influenced the legal systems of many countries, with some following a pure form of either common or Roman law, while others have adopted a mixed legal system.
| Characteristics | Values |
|---|---|
| Legal origins | Common law is derived from England and its former colonies. Roman civil law originated in ancient Rome and is followed in its former colonies. |
| Sources of law | Common law is derived from judicial decisions, community customs, and interpretation of previous court rulings (precedents). Roman civil law is based on written codes, legislation, and legal texts. |
| Role of judges | In common law, judges interpret and make law through their decisions. In Roman civil law, judges interpret and apply existing law rather than creating new law. |
| Precedent | Common law relies on precedents, where previous court decisions are binding or persuasive in similar cases. Roman civil law considers previous rulings but they are not binding. |
| Flexibility | Common law is flexible and adaptable to changing circumstances. Roman civil law is more codified and less adaptable. |
| Jury system | The jury system is prevalent in common law. Juries are employed in both civil and criminal cases to weigh evidence, find facts, and apply the law. |
| Legal categories | Roman civil law categorises legal matters into property law, contract law, and tort law. |
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Sources of law
Sources of Common Law
Common law, which developed in England, is primarily based on judicial precedent and emphasises case law and the principle of stare decisis. This means that judges interpret and apply the law based on previous court rulings (precedents) and community customs, allowing the law to evolve over time and adapt to changing societal values. Common law is flexible and dynamic, with judges authorised to interpret and apply the law according to the specific circumstances of each case. They fill in gaps in the law and create legal principles through their judgments, with precedents set by higher courts serving as binding authority for lower courts. The sources of common law include the constitution (except in the UK), legislation, statutes, subsidiary legislation, common law and equity, custom, convention, and international law.
Sources of Roman Law
Roman law, originating from ancient Rome, emphasises legislation and the systematic organisation of legal principles. It is a codified system based on written codes and legislation, with laws written and fixed in legislative codes. Roman law provides a structured framework for legal analysis, classifying legal matters into distinct categories such as property law, contract law, and tort law. In Roman law, judges are primarily responsible for applying the law rather than developing it. They interpret and enforce existing legal provisions without creating new legal principles through their judgments. The sources of Roman Civil Law are mainly the constitution, with civil law always following the constitution in the judiciary, making decision-making easier for judges.
Comparison
The key difference between the two systems lies in their sources and methods of enforcement. Common law is derived from judicial decisions made in courts, while Roman law is based on written codes and legislation. Common law relies heavily on precedents, with past rulings serving as binding authority in similar cases, while Roman law considers precedents to a lesser extent, focusing more on legislative enactments. Common law is known for its flexibility and adaptability, while Roman law is more codified and less adaptable to change.
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Role of judges
The role of judges in the two legal systems differs significantly. In the common law system, judges play a crucial role in interpreting and making law through their decisions. They interpret statutes, fill in gaps in the law, and create legal principles through their judgments. This is known as judge-made law. Judges have the authority to interpret and apply the law in a manner that suits the particular circumstances of each case, allowing the law to evolve gradually through judicial decisions. Precedents set by higher courts are binding on lower courts.
In the Roman Civil Law system, judges are primarily responsible for applying the law rather than developing it. Their role is to interpret and enforce the existing legal provisions, which are derived from the legal system of ancient Rome. They do not have the same level of authority to interpret and apply the law as their common law counterparts, as Roman law is a codified system with written and fixed legislative codes. While Roman law also considers previous court decisions, these do not have the same binding effect as in common law.
The difference in the role of judges leads to a key distinction between the two legal systems. Common law is known for its flexibility and adaptability, evolving over time through judicial decisions and community customs. On the other hand, Roman law is more rigid and less adaptable, emphasizing written statutes and legal texts.
In terms of the sources of law, common law is derived from judicial decisions made in courts, while Roman law is based on written codes and legislation. This distinction influences the role of judges in each system. Common law relies heavily on precedents, where previous court decisions serve as binding authority in similar cases. In contrast, Roman law is based on the Constitution and judicial precedent is not binding, although it may be considered in administrative or constitutional court matters.
The influence of these legal systems can be seen globally. Common law forms the basis of the legal systems in many English-speaking countries, including the United States, Canada, Australia, New Zealand, and the United Kingdom. Roman law, on the other hand, has greatly influenced civil law systems found in many countries, particularly in continental Europe, Latin America, and parts of Asia.
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Precedent
One of the most significant differences between common law and Roman law is their approach to precedent. Common law, which is prevalent in countries like the United States, Canada, India, England, and their former colonies, is characterised by its reliance on precedent or past judicial decisions. In this system, judges play a crucial role in interpreting and applying the law, and they have the authority to interpret and apply the law in a way that suits the specific circumstances of each case. This allows the law to evolve gradually through judicial decisions and adapt to changing societal values, making it flexible and dynamic.
In common law, past legal precedents and judicial rulings are used to decide cases. Judges interpret statutes and apply legal principles based on prior court rulings, creating a body of legal principles and doctrines. Precedents set by higher courts serve as binding authority on lower courts. This means that previous court decisions can have a persuasive or binding effect on future similar cases.
On the other hand, Roman law, which is practised in Latin America, Continental Western Europe, and many countries in Central and South America, East Asia, and parts of Africa, takes a different approach to precedent. While Roman law also considers previous court decisions, these decisions do not have the same binding nature as in common law. Roman law is based on written codes and legislation, emphasising written statutes and legal texts, and it classifies legal matters into distinct categories such as property law, contract law, and tort law. This classification provides a structured framework for legal analysis.
In Roman law, judges are primarily responsible for applying the law rather than developing it. Their role is to interpret and enforce existing legal provisions rather than creating new legal principles through their judgments. This is because Roman law is derived from the legal system of ancient Rome, which heavily emphasised legislation and the systematic organisation of legal principles. While Roman law has evolved over time, it is generally less adaptable to changing circumstances than common law due to its emphasis on codified statutes and written codes.
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Flexibility
Common law is known for its flexibility and adaptability to changing circumstances. It is derived from judicial decisions made in courts, community customs, and previous court rulings (precedents), allowing it to evolve over time. This flexibility enables the legal principles to adapt as societal values change. Judges play a crucial role in the development of common law by interpreting and applying the law in a way that suits the specific circumstances of each case. They fill in gaps in the law and create legal principles through their judgments, with precedents set by higher courts serving as binding authority on lower courts.
In contrast, Roman Civil Law is based on the constitution and written codes, emphasizing legislation and the systematic organization of legal principles. It is less adaptable and more structured, with judges primarily responsible for applying the law rather than developing it. They interpret and enforce existing legal provisions without creating new legal principles through their judgments.
The flexibility of common law can be seen in its reliance on judicial precedent and gradual development through court decisions. Judges in the common law system have the authority to interpret statutes and apply legal principles based on prior court rulings, creating a body of legal principles and doctrines that can evolve over time. This flexibility allows common law to better adapt to the unique needs and changing circumstances of the societies it governs.
On the other hand, Roman law classifies legal matters into distinct categories, such as property law, contract law, and tort law, providing a structured approach to legal analysis. While Roman law also considers previous court decisions, they do not have the same binding effect as in common law, with judicial precedent being non-binding in nature. This lack of flexibility in Roman law means that changes in legislation or the creation of new legal principles are primarily driven by legislative enactments rather than judicial decisions.
Furthermore, the flexibility of common law is evident in its ability to accommodate a jury system, with juries employed in both civil and criminal cases. In contrast, Roman law does not typically employ juries and relies more on the interpretation and application of written codes and legislation by judges. This difference in flexibility has led to variations in the application of common law and Roman law across different countries and legal traditions.
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Geographic prevalence
Common law and Roman civil law are two distinct legal systems with different geographic prevalences and historical influences. Common law, developed in England, is prevalent in many English-speaking countries, including the United States, Canada (except Quebec), India, Australia, New Zealand, and the United Kingdom. These countries were largely former British colonies.
Roman civil law, on the other hand, is practiced throughout Continental Western Europe, such as in Spain, France, Germany, and Italy. It is also followed in Latin America, most of Africa, and parts of Asia, including Japan. This prevalence is due to the influence of colonial powers like Spain and Portugal in Latin America and Asia, and the historical influence of Roman law on European legal systems.
Some countries, like South Africa, Botswana, and Zimbabwe, have a mixed legal system, utilising a combination of both common law and Roman civil law traditions. Additionally, Quebec in Canada, being a French province, follows a largely civil law system but is also subject to some common law influences due to Canadian federalism.
The geographic prevalence of these legal systems has been shaped by historical colonisation, the influence of Roman law in Europe, and the adoption of legal systems suited to the specific needs and values of each country or region.
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Frequently asked questions
Common Law, developed in England, is based on judicial precedent and emphasises case law and the principle of stare decisis. Roman Law, originating from ancient Rome, emphasises legislation and the systematic organisation of legal principles.
Common Law is derived from judicial decisions made in courts rather than from written statutes or codes. Roman Law, on the other hand, is based on written codes and legislation.
In Common Law, judges play an important role in interpreting and making law through their decisions. In Roman Law, judges are seen as interpreting and applying existing law rather than making new law.









































