
Civil law and constitutional law are two distinct legal systems that differ in their historical origins, geographical prevalence, and underlying principles. Civil law, also known as continental or Romano-Germanic law, is rooted in the Roman Empire and emphasizes the codification of laws, focusing on general principles and rules. It is the most widespread legal system globally, practiced in about 150 countries. On the other hand, constitutional law defines the roles, powers, and structures of state entities, as well as the basic rights of citizens and their relationship with the government. While civil law and constitutional law overlap in some countries, they differ in their approaches to judicial precedent, with common law systems, including the United States and former British colonies, emphasizing judicial precedent, and civil law systems, such as those in Continental Europe, relying primarily on codified law. Understanding the differences between these legal systems is crucial for interpreting laws and ensuring justice within their respective jurisdictions.
| Characteristics | Values |
|---|---|
| Source of law | Common law systems rely on judicial precedent, while civil law systems rely on legal codes |
| Role of judges | In common law systems, judges act as referees; in civil law systems, they act as investigators |
| Role of lawyers | In common law systems, lawyers argue their side of the case; in civil law systems, they advise clients on legal proceedings |
| Freedom of contract | Common law systems have extensive freedom of contract, while civil law systems have less freedom of contract |
| Basis of constitution | Common law systems may not always follow a constitution, while civil law systems generally do |
| Judicial review | Common law systems emphasize judicial review, while civil law systems do not |
| Structure of judiciary | The structure of the judiciary differs between the two systems, with common law judiciaries being adversarial and civil law judiciaries being inquisitorial |
| Historical origin | Common law originated in medieval England, while civil law is rooted in the Roman Empire |
| Influence | Common law is prevalent in former British colonies, while civil law is the most widespread system in the world, practiced in about 150 countries |
| Focus | Common law focuses on recognizing prior court decisions as legally binding, while civil law focuses on formulating general principles and distinguishing substantive rules from procedural rules |
| Scope | Common law is less prescriptive, while civil law is more prescriptive |
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What You'll Learn
- Civil law is based on Roman law, while common law is based on English law
- Civil law is more prescriptive, while common law is less so
- Civil law is more widespread, while common law is followed in former British colonies
- Civil law relies on codes, while common law relies on past judicial precedent
- Civil law has a more sophisticated model for contracts

Civil law is based on Roman law, while common law is based on English law
Civil law and common law are two distinct legal systems with different historical origins and characteristics. Civil law, also known as neo-Roman law, Romano-Germanic law, or Continental law, is rooted in the legal traditions of the Roman Empire. On the other hand, common law, also known as English common law, originated in medieval England and is prevalent in former British colonies and English-speaking countries.
Civil law is based on a comprehensive codification of laws, with countries enacting civil codes that serve as the primary source of law. It is characterized by its reliance on legal codes and abstractions, formulating general principles, and distinguishing substantive rules from procedural rules. Civil law holds case law in a subordinate position to statutory law and is often associated with an inquisitorial system. The most influential civil codes include France's Napoleonic Code (1804) and Germany's Bürgerliches Gesetzbuch (1900), which have been adopted or adapted by numerous countries worldwide.
In contrast, common law is based on judicial precedent and uncodified case law. It recognizes prior court decisions as legally binding and places greater emphasis on judicial decisions than civil law. Common law systems tend to be less prescriptive, allowing more freedom of contract and generally permitting everything that is not expressly prohibited by law.
While civil law takes influence from Roman law, common law is relatively immune from Roman influence. Classical Roman law and common law share some similarities in structure, such as a two-stage legal procedure, but they also exhibit significant differences.
In summary, civil law and common law differ in their historical origins, reliance on legal codes versus judicial precedent, and the degree of prescriptiveness and freedom of contract they allow. Civil law is based on Roman law and prevalent in Continental Europe and many other countries, while common law is based on English law and widely adopted in former British colonies and English-speaking nations.
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Civil law is more prescriptive, while common law is less so
Civil law and common law are two distinct legal systems with different characteristics and applications. Civil law, also known as neo-Roman law, Romano-Germanic law, or Continental law, is the most widespread legal system in the world, practiced in about 150 countries. It is rooted in the Roman Empire and was comprehensively codified and disseminated in the 19th century, notably with France's Napoleonic Code and Germany's Bürgerliches Gesetzbuch. Civil law is based on comprehensive codes and defined statutory laws, such as the German Civil Code, which has influenced the legal systems of countries like Japan, South Korea, and Switzerland. Civil law systems are characterized by their reliance on legal codes as the primary source of law, and they hold case law secondary to statutory law. Civil law is generally more prescriptive than common law, with less freedom of contract as many provisions are implied into a contract by law, and parties may not be able to contract out of certain provisions.
On the other hand, common law originated in medieval England and is prevalent in former British colonies or protectorates, including the United States. Common law relies heavily on judicial precedent and case-by-case rulings to interpret and apply the law, allowing for some freedom of interpretation. Judicial decisions are generally binding and can only be overturned by the same court or through legislation. Common law is less prescriptive than civil law, with extensive freedom of contract, and generally permits everything that is not expressly prohibited by law.
The distinction between civil law and common law has important implications for legal practices and outcomes. Civil law's prescriptive nature provides a clear framework for bringing cases to court, handling claims, and determining punishments. In contrast, common law's flexibility allows for adaptation to situations not contemplated by the legislature, but may result in regional variations in legal outcomes.
While civil law and common law have distinct characteristics, some countries, like the United States and the United Kingdom, operate under a dual system of both common and civil law. This dual system incorporates the structured codes of civil law and the flexibility of common law, allowing for a more comprehensive and adaptable legal framework.
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Civil law is more widespread, while common law is followed in former British colonies
Civil law and common law are two distinct legal systems with different sources of authority. Civil law is the most widespread legal system globally, practiced in about 150 countries. It is rooted in the Roman Empire and was comprehensively codified and disseminated in the 19th century, particularly with France's Napoleonic Code and Germany's civil code. Civil law is characterized by its reliance on legal codes as the primary source of law, and it holds case law as secondary to statutory law. Civil law countries include Japan, South Korea, Switzerland, Taiwan, and Korea.
On the other hand, common law systems, including those in the Commonwealth and former British colonies such as the United States, emphasize judicial precedent, where past legal precedents and judicial rulings are used to decide cases. In common law systems, judicial cases are considered the most important source of law, allowing judges to proactively contribute to rule-making. While common law systems have separate constitutional, administrative, and civil court systems, civil law countries generally have a single judiciary.
The structure of the judiciary differs significantly between civil and common law systems. In common law, the judge often acts as a referee between two arguing lawyers, while in civil law, the judge is typically the main investigator, and the lawyer's role is to advise clients and provide evidence. Common law systems provide extensive freedom of contract, while civil law countries have a more sophisticated model for contracts, with provisions implied by law.
While civil law is more widespread, common law is followed in many former British colonies, such as the United States, where it inherited traditions of British common law, including habeas corpus and jury trials. This adoption of English common law was further solidified after the American Revolutionary War, when the new government adopted existing English common law, except where it conflicted with the US Constitution.
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Civil law relies on codes, while common law relies on past judicial precedent
Civil law and common law are two of the world's main legal systems. Civil law is the most common legal system globally, practiced in about 150 countries. Civil law is a legal system rooted in the Roman Empire, with its modern form influenced by the Napoleonic Code and German civil law. It is characterized by its reliance on legal codes that function as the primary source of law. Civil law systems have clear rules for how judges need to rule for many specific disputes.
Common law, on the other hand, is a body of unwritten laws based on legal precedents set by courts. It originated in medieval England and is prevalent in former British colonies or protectorates, including the United States, Canada, Australia, India, and the United Kingdom. Common law relies on case-by-case judicial rulings to interpret and apply the law, leading to regional variations in legal outcomes. It is considered more flexible than civil law as it can respond to changes in society and does not require lawmakers to pass changes in statutes and codes.
The stability and consistency of common law are based on the principle of stare decisis, where judicial decisions by higher courts are generally binding for lower courts. Common law promotes efficiency in court proceedings as judges only need to follow precedent when making decisions. Additionally, common law allows for adaptability as it can address situations not originally contemplated or predicted by lawmakers.
In contrast, civil law systems are more prescriptive and have less freedom of contract. While civil law codes may be concise and broadly applicable, they may not cover all possible scenarios, and judges tend to follow previous judicial decisions. Civil law holds case law secondary and subordinate to statutory law, and court decisions are not binding in other cases, even with similar facts.
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Civil law has a more sophisticated model for contracts
Civil law is a legal system rooted in the Roman Empire, with the most influential civil codes being the German Civil Code and France's Napoleonic Code. Civil law is the most widespread system of law in the world, practiced in about 150 countries. Civil law systems are characterized by their reliance on legal codes that function as the primary source of law. In civil law countries, the judge is usually the main investigator, and the lawyer's role is to advise their client on legal proceedings, write legal pleadings, and help provide evidence to the investigative judge.
In contrast, common law systems rely heavily on judicial precedent and past legal precedents or judicial rulings are used to decide cases. Common law countries tend to have extensive freedom of contract, with very little or no provisions implied in contracts by law.
The United States inherited many traditions of British common law, including jury trials, but in 1938, the U.S. Supreme Court ruled that there will be “no general common law”. This means that federal courts deciding issues that originated in states must look to the state judicial interpretations of those matters.
Constitutional law is a body of law that defines the role, powers, and structure of different entities within a state, namely the executive, the parliament or legislature, and the judiciary, as well as the basic rights of citizens and their relationship with their governments. Human rights law in common law countries is largely built on legal precedent in the courts' interpretation of constitutional law, whereas that of civil law countries is almost exclusively composed of codified law.
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Frequently asked questions
Civil law is a legal system rooted in the Roman Empire, which was comprehensively codified and disseminated starting in the 19th century. Civil law is the most widespread system of law in the world, in force in various forms in about 150 countries. Civil law systems are characterized by their reliance on legal codes that function as the primary source of law.
Constitutional law is a body of law that defines the role, powers, and structure of different entities within a state, namely, the executive, the parliament or legislature, and the judiciary, as well as the basic rights of citizens and their relationship with their governments.
Civil law is concerned with the rights of citizens in their relationships with each other, excluding criminal law, commercial law, and labor law, whereas constitutional law deals with the fundamental principles by which the government exercises its authority. Civil law places less emphasis on judicial review and only the parliament or legislature has the power to effect law. Constitutional law, on the other hand, may include judge-made law, which is an important source of law in common law systems.
Civil rights are an individual’s right to be an active part of a society and its economy without discrimination or oppression. Constitutional rights are liberties that are granted to individuals by a country’s constitution. In the United States, civil rights are primarily integrated into the constitution, so civil rights and constitutional rights overlap. Another difference is that constitutional rights address the treatment of the individual by the state.







































