
Common law is a legal system primarily derived from judicial decisions rather than written statutes. It originated in England in the 12th century under King Henry II and is now a system used in many countries around the world, including the United States, Canada, India, and Nepal. Common law is characterized by its adversarial process, where two parties present their arguments to a judge, who serves as a neutral moderator. Judges' decisions can be binding on identical or similar cases in the future, providing consistency and fairness. While federal laws exist, each state can have its own common law rules, and common law is not binding on one particular state.
| Characteristics | Values |
|---|---|
| Origin | England |
| Origin Year | 1166 or 12th Century |
| Origin Ruler | King Henry II |
| Type of Law | Judicial decisions, not written statutes |
| Basis | Statutes, written by legislature |
| Influenced by | Earlier Anglo-Saxon traditions |
| Influenced by | Roman Law |
| Influenced by | Canon Law |
| Influenced | Civil Law |
| Influenced | US Common Law |
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What You'll Learn

Common law is largely uncodified
Common law is a legal system primarily derived from judicial decisions or rulings rather than written statutes. It originated in England in the 12th century under King Henry II. Common law is largely uncodified, meaning there is no written compilation of laws, unlike civil law, which is set out in legal rules and statutes. Instead, common law is made up of judicial decisions and rulings.
Judges use past rulings to decide cases, especially when there are no clear laws to follow. These past rulings are used to help decide new cases with similar issues. This is known as judicial precedent and is based on the concept of stare decisis, meaning "to stand by things decided". Precedence is important because it provides a degree of certainty of outcome, fairness, and equity between cases where the circumstances are the same or similar. For example, the definition of "murder" was derived from court cases, and the most reasonable rulings were followed by more courts.
However, this does not prevent common law from adapting to changing times. Courts can identify differences between situations and distinguish an earlier case from the one before them, thereby releasing them from the need to follow the precedent. As a result, judges have an enormous role in shaping the laws in countries where common law forms part of the legal system.
Common law has also often influenced written statutes. For example, in the UK, the longstanding common-law offence of outraging public decency played a role in shaping legislation against upskirting, which was criminalized in 2019.
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Common law is derived from judicial decisions
Common law is a legal system primarily derived from judicial decisions or precedents rather than written statutes. It originated in England in the 12th century under King Henry II. The common law, so named because it was common to all the king's courts across England, originated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066.
Common law is deeply rooted in stare decisis, a Latin phrase that means "to stand by things decided". This means that judges' decisions can influence future cases, providing consistency and fairness across similar legal situations. When a similar case has been resolved, courts typically align their reasoning with the precedent set in that decision. However, in a "case of first impression" with no precedent or clear legislative guidance, judges are empowered to resolve the issue and establish new precedent.
Common law is characterized by its adversarial process, where two parties present their arguments to a judge, who serves as a neutral moderator. This system allows for adaptability, as judges can distinguish between cases based on their specific circumstances, which can lead to the development of new legal principles. For example, the definition of "murder" was derived from court cases, and the most reasonable rulings were followed by more courts.
Common law systems place great weight on precedent, while civil law judges tend to give less weight to judicial precedent. Common law draws from institutionalized opinions and interpretations from judicial authorities and public juries. It is generally uncodified, meaning there is no comprehensive compilation of legal rules and statutes. However, it does rely on some scattered statutes, which are legislative decisions.
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Common law is adaptable
Common law is a legal system primarily derived from judicial decisions rather than written statutes. It is deeply rooted in stare decisis, meaning "to stand by things decided". Common law is adaptable because it is based on case law and legal precedent, which means that judges can rely on previous court rulings and decisions to guide their thinking in new or unusual cases.
Common law can also evolve and adapt to address new situations and challenges. When common law proves effective in addressing unforeseen circumstances, it may inform and influence the creation of new statutes and rules, thus helping to shape the law and ensure it remains relevant and responsive to the needs of society.
Common law originated in England and, due to historical influences, it forms the backbone of the American legal system, as well as many other countries around the world, including Ghana, India, Nepal, and Canada (excluding Quebec).
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Common law is influenced by written statutes
Common law, also known as case law, is a body of unwritten laws based on legal precedents established by the courts. It is a system that places great weight on precedent and is primarily derived from judicial decisions rather than written statutes. Common law originated in England in the 12th century under King Henry II and was applied within British colonies across the continents. It is deeply rooted in stare decisis, which means "to stand by things decided", where courts follow precedents established by previous decisions.
While common law is largely uncodified, it may incorporate certain statutes. For example, in the United States, common law may be influenced by federal statutes, and in some states, there are statutes allowing for common-law marriage. In England, the common law was influenced by Roman Law, which had migrated to the country before the introduction of Christianity to the British Isles.
In a "case of first impression" with no precedent or clear legislative guidance, judges are empowered to resolve the issue and establish new precedent. This is known as judicial precedent, and it is based on the concept of stare decisis. Decisions made by judges can be binding on identical or similar cases coming forward to be heard in court in the future. This provides consistency and fairness across similar legal situations and allows for adaptability, as judges can distinguish between cases based on their specific circumstances, which can lead to the development of new legal principles.
Common law is characterized by its adversarial process, where two parties present their arguments to a judge, who serves as a neutral moderator. This process allows for stability and consistency in the legal justice system. However, lower courts can choose to modify or deviate from precedents if they are outdated or if the current case is substantially different from the precedent case.
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Common law is derived from Anglo-Saxon traditions
Common law is a legal system primarily derived from judicial decisions rather than written statutes. It originated in England in the 12th century under King Henry II and is characterised by its adversarial process, where two parties present their arguments to a judge, who serves as a neutral moderator. This system allows for adaptability, as judges can distinguish between cases based on their specific circumstances, which can lead to the development of new legal principles.
England is a common-law jurisdiction, and its common law is derived mainly from court cases. For example, the definition of "murder" was derived from court cases, and the most reasonable rulings were followed by more courts. Later, legislation and legal codes were written.
The common law system emerged in England from judicial decisions. Before the 12th century, no system of justice existed that applied across the whole of England. Over time, it became clear that a central system of governance and justice was needed for the monarch to exert control.
The common law system is closely associated with the development of the sovereign state, and law and the state are often closely intertwined in modern thinking.
The degree to which common law drew from earlier Anglo-Saxon traditions, such as the jury, ordeals, the penalty of outlawry, and writs, is still a subject of discussion. Anglo-Saxon law was in operation from the 6th century until the Norman Conquest in 1066. It was written in the vernacular and was relatively free of Roman influence, which was instead exerted primarily through the church.
Anglo-Saxon law was made up of three components: the laws and collections promulgated by the king, authoritative statements of custom such as those found in the Norman-instituted Domesday Book, and private compilations of law. It was largely derived from unwritten customs termed folk-right (folcriht in Old English, meaning 'right or justice of the people'). Folk-right was tribal in origin and differentiated on highly localized bases.
Anglo-Saxon law also had a strong Scandinavian influence due to the Viking invasions of the 8th and 9th centuries. The Danelaw, for example, was governed under Scandinavian law after being conquered by the Danes in the 9th century.
The earliest written Anglo-Saxon laws were issued around 600 by Æthelberht of Kent, who created his law code "after the examples of the Romans" (iuxta exempla Romanorum in Latin). However, the actual legislation was not influenced by Roman law but instead converted older customs into written form.
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Frequently asked questions
Common law is a legal system primarily derived from judicial decisions or rulings rather than written statutes. It is based on the concept of stare decisis, which means "to stand by things decided".
Common law systems place great weight on precedent, while civil law judges tend to give less weight to judicial precedent. Civil law is codified and based on legislative decisions, whereas common law evolves through the rulings of judges in court cases.
Common law originated in England in the 12th century under King Henry II. It emerged as a central system of governance and justice for the monarch to control.
Common law in the United States is based on judicial rulings and precedents rather than written statutes. Each state can have its own common law rules.



















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