
The Napoleonic Code and Justinian Code are two of the most influential legal systems in history. The Napoleonic Code, established by Napoleon Bonaparte after the French Revolution, became the basis for the civil law system in over 100 countries. It was the first modern legal code widely adopted in Europe and emphasised clearly written and accessible laws. The Justinian Code, commissioned by Roman Emperor Justinian I in the 6th century CE, provided a model for contracts, rules of procedure, family law, and a strong monarchical constitutional system. It was the first comprehensive codification of Roman law and served as an important source of inspiration for the Napoleonic Code. The key difference between the two systems is that common law, which is based on the Napoleonic Code, is a bottom-up approach that implies what is not forbidden is permitted, while the Napoleonic Code is a top-down system that takes a more bureaucratic and controlling approach to governing citizens.
| Characteristics | Values |
|---|---|
| Origin | Civil law is rooted in the Roman Empire, with the earliest known codification being the Code of Hammurabi, written in ancient Babylon during the 18th century BC. |
| Modern Codification | The modern codification of civil law is attributed to the Justinian Code, commissioned by Roman emperor Justinian I in the 6th century CE to better administer the empire. |
| Napoleonic Code Influence | The Napoleonic Code, established in 1804, was influenced by the Justinian Code and became the first modern legal code widely adopted in Europe, serving as the basis for the civil law system in many countries. |
| Differences | The Napoleonic Code differs from the Justinian Code by incorporating a comprehensive rewrite of various rules and laws, not just legislation, reflecting a top-down governing approach. |
| Purpose | The Napoleonic Code aimed to consolidate the tenets of the French Revolution, including equality before the law, freedom of religion, and the abolition of feudalism, while also addressing criminal justice procedures and court proceedings. |
| Impact | The Napoleonic Code has influenced the legal systems of over 100 countries, including Canada, which blends it with common law, and Germany, which adopted the Bürgerliches Gesetzbuch in 1900 as its civil code. |
| Criticism | Criticisms of the Napoleonic Code include its de facto presumption of guilt, leading to lengthy remand periods, and its deprivation of civil rights for non-French citizens. |
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What You'll Learn

Common law is a bottom-up legal system
Common law is a legal system that is considered "bottom-up" due to its incremental and adaptable nature. It is a body of unwritten laws based on legal precedents established by the courts, also known as case law. This means that common law evolves through a gradual process of judicial decisions and interpretations, allowing for adaptability to changing circumstances and new situations.
The bottom-up nature of common law is evident in its reliance on precedent and the role of judges. When faced with novel or ambiguous cases, judges draw on past precedents and institutionalised interpretations to guide their rulings. This incremental approach allows the law to evolve over time, adapting to social and technological changes. For example, courts have adapted copyright laws to new technologies, such as VCRs and MP3 players, through incremental, precedent-based decisions.
In a common-law system, different cases are heard by different judges, which prevents the mistakes of a single judge from unduly influencing the direction of the law. This judicial competition fosters a process of peer review, where subsequent judges select the precedents that best fit the facts of a case. Over time, individual cases coalesce into a cohesive body of law, creating a nuanced and adaptable legal framework.
Common law stands in contrast to civil law systems, such as the Napoleonic Code and Justinian Code, which are based on comprehensive legal codes. Civil law, rooted in the Roman Empire, is characterised by concise and broadly applicable texts that serve as the primary source of law. The Napoleonic Code, established in France in 1804, was influenced by Justinian's sixth-century codification of Roman law but differed in its comprehensive rewrite and inclusion of various earlier rules.
While civil law provides a structured framework, common law allows for flexibility and interpretation. This bottom-up approach enables the law to evolve through judicial decisions, recognising prior court rulings as legally binding precedents. Common law originated in medieval England and is practised today in countries including the United States, Australia, Canada, and the United Kingdom.
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Napoleonic Code is a top-down system
The Napoleonic Code, also known as the Civil Code of the French, was established in 1804 during the French Consulate. It was the first modern legal code to be widely adopted in Europe, although it was not the first civil code. The Code was established to provide a coherent set of laws concerning property, colonial affairs, the family, and individual rights. It was also the first modern legal code to be adopted with a pan-European scope, influencing the law of many countries formed during and after the Napoleonic Wars.
The Napoleonic Code was developed mainly out of various customs, but it was inspired by Justinian's sixth-century codification of Roman law, the Corpus Juris Civilis, and within it, Justinian's Code (Codex). However, the Napoleonic Code differed from Justinian's in important ways. Unlike Justinian's Code, it incorporated all kinds of earlier rules, not just legislation, and it was a comprehensive rewrite rather than a collection of edited extracts. The Code was drafted by a commission of four eminent jurists, although Napoleon chaired many of the commission's plenary sessions, and his support was crucial to its enactment.
The Napoleonic Code marked a fundamental change in the nature of the civil law legal system, making laws clearer and more accessible. It superseded the former conflict between royal legislative power and the protests of judges representing the views and privileges of the social classes to which they belonged. This conflict led the Revolutionaries to take a negative view of judges making laws, reflected in the Code's provision prohibiting judges from deciding a case by introducing a general rule (Article 5). The Code also gave significant power to the prosecution in court proceedings, although criminal justice in European countries at the time tended towards repression. For example, it was only in 1836 that prisoners charged with a felony were given a formal right to counsel in England, whereas the Napoleonic Code of Criminal Procedure allowed defendants access to a lawyer before a Cour d'assises and mandated the appointment of a lawyer for defendants who did not have one.
The Napoleonic Code has been influential not only in France but also in other parts of the world. It served as the basis for the modern inquisitorial system of criminal courts in France and many civil law countries, although it has undergone significant changes over time, particularly regarding the rights of the defendant. The Code has also influenced the legal systems of countries outside Europe, such as those in the Middle East and Latin America, although the Spanish and Portuguese versions of the civil code formed the foundation of Latin American legal systems.
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The Napoleonic Code was influenced by Justinian's sixth-century codification of Roman law
Civil law is a legal system rooted in the Roman Empire and was comprehensively codified and disseminated starting in the 19th century, most notably with France's Napoleonic Code (1804). The Napoleonic Code was influenced by Justinian's sixth-century codification of Roman law, also known as the Corpus Juris Civilis.
The Code of Justinian, or Justinian Code, is a collection of laws and legal interpretations developed under the sponsorship of the Byzantine emperor Justinian I from 529 to 565 CE. It consists of four books: the Codex Constitutionum, Digesta or Pandectae, Institutiones, and Novellae Constitutiones Post Codicem. The code was not a new legal code but a rationalisation of existing Roman statutes, eliminating contradictions and conflicts, and repealing any laws not included in it.
Justinian's Code provided a model for contracts, rules of procedure, family law, wills, and a strong monarchical constitutional system. It was received differently in different countries, becoming positive law in some and being diffused into society by legal experts and scholars in others. The Code continued without interruption in the Eastern Roman Empire until the 15th century and was widely implemented in Western Europe due to the influence of the Holy Roman Empire and its students, who were the only trained lawyers.
The Napoleonic Code, established during the French Consulate in 1804, was the first modern legal code to be widely adopted in Europe. It was influenced by Justinian's Code but differed in important ways. Unlike Justinian's Code, the Napoleonic Code incorporated all kinds of earlier rules, not just legislation, and was a comprehensive rewrite rather than a collection of edited extracts. The Napoleonic Code stressed clearly written and accessible law and was a major milestone in the abolition of the previous patchwork of feudal laws.
The Napoleonic Code influenced the law of many countries formed during and after the Napoleonic Wars, including those in Western Europe and Latin America. In Germany, the Napoleonic Code was influential until the introduction of the Bürgerliches Gesetzbuch in 1900 as the first common civil code for the entire German Empire. A civil code with Napoleonic influences was also adopted in Romania in 1864 and remained in force until 2011.
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Common law relies on judicial precedent
Common law is a body of unwritten laws based on legal precedents established by the courts. It 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. Common law relies on judicial precedent, also known as stare decisis, which means that courts will adhere to precedent in making their decisions. When a court faces a legal argument, if a previous court has ruled on the same or a closely related issue, then the court will make its decision in alignment with the previous court's decision. This is in contrast to civil law systems, which are characterized by their reliance on legal codes that function as the primary source of law.
Common law originated in medieval England and was spread across the British Isles, first to Wales, then to Ireland, and later to overseas colonies by the British Empire. Many former colonies, including Ghana, retain the common law system today. Common law systems give great weight to judicial precedent and the style of reasoning inherited from the English legal system. Approximately one-third of the world's population lives in common law jurisdictions or in mixed legal systems that integrate common law and civil law.
While common law relies on some scattered statutes, which are legislative decisions, it is largely based on precedent, meaning the judicial decisions that have already been made in similar cases. This allows the law to be adapted to situations that were not contemplated at the time by the legislature. However, reliance on old precedents, no matter how outdated or biased they may be, can lead to unfair marginalization or disempowerment of certain groups. For example, in England, common law held that fathers were entitled to custody of the children in cases of divorce, which kept women trapped in marriages.
The Napoleonic Code, established in 1804, is a prominent example of a civil law code. It was the first modern legal code to be widely adopted in Europe and influenced the law of many countries formed during and after the Napoleonic Wars. It was inspired by Justinian's sixth-century codification of Roman law, the Corpus Juris Civilis, but differed in that it incorporated all kinds of earlier rules and was a comprehensive rewrite. The Napoleonic Code stressed clearly written and accessible law and was a major milestone in the abolition of the previous patchwork of feudal laws.
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Civil law is based on legal codes
Civil law, also known as continental or Romano-Germanic law, is rooted in the Roman Empire and was comprehensively codified and disseminated in the 19th century. Unlike common law systems, civil law systems are characterised by their reliance on legal codes as their primary source of law, rather than on judicial precedent. Civil law codes are concise and broadly applicable, dealing in generalities rather than specific scenarios. They are designed to be accessible to citizens, setting out general principles and rules of law.
The most prominent civil codes are the Napoleonic Code (1804) and the German Civil Code (Bürgerliches Gesetzbuch or BGB, 1900). The Napoleonic Code was established in France during the French Consulate and is still in force today, albeit with amendments. It was inspired by the sixth-century codification of Roman law, the Corpus Juris Civilis, by Emperor Justinian, but it also incorporated earlier rules and was a comprehensive rewrite. The German Civil Code, meanwhile, is divided into five parts: definitions and concepts; obligations, including concepts of debt, sale and contract; property law; family law; and succession (estate law). It has influenced the civil codes of countries such as Japan, South Korea and Switzerland.
The Napoleonic Code was the first modern legal code to be widely adopted in Europe, influencing the law of countries formed during and after the Napoleonic Wars. It provided the basis for the Egyptian Civil Code of 1810, which remains in force in Egypt and is the basis for civil law in many countries of the Arab world. The Japanese Civil Code is also influenced by the Napoleonic Code, as well as by the German Civil Code, Japanese customary law, and English common law.
Civil law is the most widespread legal system globally, practiced in about 150 countries. It is often contrasted with common law, which originated in medieval England and comes from uncodified case law that arises from judicial decisions. Louisiana is the only US state whose private civil law is heavily based on French and Spanish codes, while Quebec law is also of French civil origin. Several Islamic countries also have civil law systems that contain elements of Islamic law.
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Frequently asked questions
Common law is a bottom-up legal system that implies, "What is not forbidden is permitted." Common law defines what you can't do while leaving you free to do everything else. On the other hand, the Napoleonic Code, also known as civil law, is a top-down system that becomes a bureaucratic and controlling approach to governing citizens, spelling out in detail what you can do.
The Justinian Code is a comprehensive codification of Roman law commissioned by Roman emperor Justinian I in the 6th century CE. It provided a model for contracts, rules of procedure, family law, wills, and a strong monarchical constitutional system.
The Napoleonic Code, officially the Civil Code of the French, is the French civil code established during the French Consulate in 1804. It was developed by French Emperor Napoleon Bonaparte after the French Revolution, which ended in 1799 when he became the ruler of France as First Consul.







































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