
The English common law and Roman civil law are two distinct judicial systems with different geographical influences. The English common law system is practiced in the United States (except Louisiana), Canada (except Quebec), India, Australia, England, and other former British colonies. On the other hand, Roman civil law is prevalent in Latin America, Continental Western Europe, China, Japan, most African nations, and South American countries (except Guyana). While the English common law system relies on past legal precedents or judicial rulings to decide cases, Roman civil law is based on constitutions and codified statutes, where judicial precedent is non-binding. The differences between these two systems have sparked debates about the need for a uniform law to improve trade and the efficiency of justice delivery systems worldwide.
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What You'll Learn
- Influence: Roman law influenced British common law, especially in former colonies
- Geography: Roman law was adopted in Western Europe and its colonies, British common law in its colonies
- Development: English common law developed in parallel with Roman-based civil law
- Sources: Roman civil law is based on the constitution, while English common law originated as uncodified law
- Precedent: Roman law was not binding, but English common law uses past precedents to decide cases

Influence: Roman law influenced British common law, especially in former colonies
Roman law and English common law are two distinct legal systems with differences in their sources, development, and influence. However, it is important to note that English law should not be viewed in isolation from European law due to their shared history and influence on each other.
Roman law, with its long tradition in ancient Rome, has had a significant influence on legal systems worldwide, including former colonies of Western Europe, such as Spain and Portugal, and in Latin America. It served as the basis for legal practice in Western continental Europe and beyond. Roman law, with its concepts like \"ius commune\" (common law) and \"ius publicum\" (public law), provided a foundation for legal understanding and education.
English common law, on the other hand, has its roots in uncodified law, but has since been codified, and it gives binding power to judicial precedent. This system is practised in countries like the United States (except Louisiana), Canada (except Quebec), India, Australia, and former British colonies.
While English common law developed independently, it was still influenced by Roman law. For example, the early English lawyers and judges were open to adopting rules and concepts from continental jurists and Roman law. Additionally, the structure and practices of thirteenth-century English justices resembled those of Roman law jurists.
The influence of Roman law on English common law can be observed in the following ways:
- The English legal system adopted certain rules and concepts from Roman law, especially in the 19th century.
- The terminology and legal glossary used in English common law were influenced by Latinate terms from Roman law.
- The development of English common law was shaped by the practices and precedents set by Roman law jurists in universities.
- Roman law served as a basis for understanding and educating lawyers, as evidenced by the research interests of scholars like Dr hab Łukasz Jan Korporowicz.
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Geography: Roman law was adopted in Western Europe and its colonies, British common law in its colonies
Roman law and British common law have influenced legal systems worldwide, with Roman law being adopted in Western Europe and its colonies, and British common law in its colonies.
Geography of Roman Law
Roman law was the legal system of ancient Rome, spanning over a thousand years of jurisprudence, from the Twelve Tables (c. 449 BC) to the Corpus Juris Civilis (AD 529). It was later adopted in Western Europe, particularly in continental European countries like Germany, Spain, and Portugal, and their colonies, including Latin America and Ethiopia. In Germany, Roman law remained in place longer under the Holy Roman Empire (963–1806).
Geography of British Common Law
English common law, also known as British common law, developed in parallel to Roman-based civil law. It was influenced by Roman law, especially in the early 19th century when English lawyers and judges borrowed rules and ideas from continental jurists and directly from Roman law. English common law was practised in England and its colonies, including the United States (except Louisiana), Canada (except Quebec), Australia, India, and other former British Commonwealth countries.
Influence on Legal Systems Worldwide
Both Roman law and British common law have had a significant influence on legal systems worldwide. The influence of Roman law can be seen in the legal systems of its former colonies in Western Europe and beyond, while the impact of British common law is evident in countries that were formerly British colonies. Some countries, like South Africa, Namibia, Botswana, and Zimbabwe, use a combination of both legal systems.
Similarities and Differences
While Roman Civil Law is based on the constitution and non-binding judicial precedent, English Common Law originated as uncodified law but has since been codified, and judicial precedent is now binding. In common law, past legal precedents or judicial rulings are used to decide cases, while civil law follows codified statutes and ordinances. Despite the differences, some scholars argue that English law should not be considered distinct from European law, as they share a common legal tradition with more similarities than differences.
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Development: English common law developed in parallel with Roman-based civil law
The English common law and Roman-based civil law are two distinct judicial systems with differences in their nature and the regions that follow them. However, they have also influenced each other's development over the centuries.
English common law, which originated as uncodified law, was influenced by Roman law, particularly in its Latinate legal glossary. The legal system of ancient Rome, spanning over a thousand years, provided a basis for legal practices in Western continental Europe and its colonies, including Latin America, and indirectly influenced the English legal system.
By the time Roman law was rediscovered and gained prominence in continental Europe during the 16th century, the English legal system was already more developed. As a result, English common law continued to evolve in parallel with Roman-based civil law. Practitioners of English common law were trained at the Inns of Court in London, while their continental counterparts received degrees in Canon or Civil Law at universities like Oxford or Cambridge.
Despite their differences, both systems influenced each other. For example, English lawyers and judges in the 19th century were open to adopting rules and ideas from continental jurists and directly from Roman law. Additionally, the development of the equity system in England incorporated elements of Romano-canon law.
The influence of these legal systems can be observed in various countries. English common law is practiced in the United States, Canada, India, Australia, England, and former British Commonwealth countries. On the other hand, Roman-based civil law is prevalent in Latin America, Continental Western Europe, China, Japan, most African nations, and South American nations except Guyana.
In summary, while English common law and Roman-based civil law developed in parallel, they also influenced each other, and their similarities and influences are significant aspects of their legal histories.
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Sources: Roman civil law is based on the constitution, while English common law originated as uncodified law
Roman civil law and English common law are two distinct legal systems with different historical origins and characteristics.
Roman civil law, also known as jus civile, was the legal system of ancient Rome, spanning over a thousand years from the Twelve Tables (c. 449 BC) to the Corpus Juris Civilis (AD 529) enacted by Emperor Justinian I. It served as the basis for legal practice in Western continental Europe and influenced the legal systems of its former colonies, including Latin America and Ethiopia. Roman law was primarily based on the constitution, with the emperor acting as the sole creator of laws through edicts, proclamations, and decisions. This is exemplified in the constitutiones principum, which represented the legislative power of the emperor.
On the other hand, English common law, also referred to as Anglo-American common law, originated as an uncodified law system. It means that there is no comprehensive compilation of legal rules and statutes, and it relies heavily on judicial precedent and the style of reasoning inherited from the English legal system. Common law systems give significant weight to previous judicial decisions made in similar cases, and these precedents guide the presiding judge's determination in new cases. English common law developed in parallel to Roman-based civil law and was spread by England to Wales, Ireland, and its overseas colonies.
The primary contrast between the two legal systems lies in their approach to written decisions and precedent. While Roman civil law was based on a written constitution and imperial legislation, English common law was initially unwritten and based on customary practices and judicial decisions. The English system was more developed than its continental counterparts when Roman law was rediscovered in the 16th century, so the practical advantages of Roman law were less apparent to English practitioners.
Despite their differences, both legal systems have influenced each other. Elements of Roman law were incorporated into English common law, especially in the early 19th century when English lawyers and judges borrowed rules and ideas directly from Roman law and continental jurists. Roman law was also taught in universities like Bologna and influenced the development of legal practice in Europe.
In summary, Roman civil law and English common law differ in their historical origins, with Roman law based on a written constitution and imperial legislation, and English common law originating as an uncodified system based on judicial precedent and customary practices. Both legal traditions have had a significant impact on the development of law in their respective spheres of influence and continue to shape legal systems worldwide.
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Precedent: Roman law was not binding, but English common law uses past precedents to decide cases
The English common law and Roman civil law are two distinct judicial systems with key differences. One significant difference lies in their approach to judicial precedent.
Roman Civil Law, rooted in the legal systems of its colonial masters like Spain and Portugal, does not consider judicial precedent binding. It is based on the constitution, and judges are not obligated to follow past precedents when deciding cases. This flexibility allows for dynamic interpretation and adaptation to changing circumstances.
On the other hand, English Common Law, practiced in countries like the United States, Canada, India, Australia, and former British Commonwealth nations, takes a different approach. In the English common law system, past legal precedents and judicial rulings are considered binding. This means that judges rely on previous case outcomes to guide their decisions on similar matters. This approach promotes consistency and stability in the legal system.
The distinction between the two systems is important, and while Roman Civil Law provides flexibility, English Common Law offers a framework for predictable decision-making. This fundamental difference in the treatment of judicial precedent has shaped the evolution of these legal systems and influenced their application in various countries.
It is worth noting that the influence of Roman law can still be found in English common law. Despite their differences, English common law has borrowed concepts and rules from Roman law, acknowledging their shared legal heritage. This blending of legal traditions highlights the complexity and evolution of legal systems worldwide.
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Frequently asked questions
Roman Law dates back to ancient Rome, spanning over a thousand years of jurisprudence. British Common Law, on the other hand, developed in England and was influenced by Roman Law and canon law.
Roman Civil Law is practised in Latin America and Continental Western Europe, as well as in former colonies of Western Europe, such as Spain and Portugal. British Common Law is practised in countries like the United States, Canada, India, Australia, and former British Commonwealth countries.
Roman Civil Law is based on the constitution and judicial precedent, which is not binding. British Common Law uses past legal precedents and judicial rulings to decide cases, and judicial precedent is binding.
While British Common Law developed independently, it has been influenced by Roman Law. Thirteenth-century English justices modelled their practices on Roman law, and some concepts from Roman Law were adopted into Common Law, especially in the early 19th century.
Understanding the differences between these legal systems is crucial as it provides insight into the judicial systems of various countries. Recognising these differences can also spark discussions about the need for a uniform law worldwide to improve trade and the efficiency of justice delivery systems.







































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