Napoleonic Code in the context of "Code of 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) and Germany's Bürgerliches Gesetzbuch (1900). Unlike common law systems, which rely heavily on judicial precedent, civil law systems are characterized by their reliance on legal codes that function as the primary source of law. Today, civil law is the world's most common legal system, practiced in about 150 countries.

The civil law system is often contrasted with the common law system, which originated in medieval England. Whereas the civil law takes the form of legal codes, the common law comes from uncodified case law that arises as a result of judicial decisions, recognizing prior court decisions as legally binding precedent.

Civil law is a major "branch of the law", in common law legal systems such as those in England and Wales and in the United States, where it stands in contrast to criminal law. Private law, which relates to civil wrongs and quasi-contracts, is part of civil law, as is contract law and law of property (excluding property-related crimes, such as theft or vandalism). Civil law may, like criminal law, be divided into substantive law and procedural law. The rights and duties of persons (natural persons and legal persons) amongst themselves is the primary concern of civil law. The common law is today as fertile a source for theoretical inquiry as it has ever been. Around the English-speaking world, many scholars of law, philosophy, politics, and history study the theoretical foundations and applications of the common law. When used in the context of a common law legal system, the term civil law means that branch of the law not including criminal law.

The common law system, which originated in medieval England, is often contrasted with the civil law legal system originating in France and Italy. Whereas the civil law takes the form of legal codes such as the Napoleonic Code, the common law comes from uncodified case law that arises as a result of judicial decisions, recognising prior court decisions as legally binding precedent.

The adversarial system (also adversary system, accusatorial system, or accusatory system) is a legal system used in the common law countries where two advocates represent their parties' case or position before an impartial person or group of people, usually a judge or jury, who attempt to determine the truth and pass judgment accordingly. It is in contrast to the inquisitorial system used in some civil law systems (i.e. those deriving from Roman law or the Napoleonic Code) where a judge investigates the case.

The adversarial system is the two-sided structure under which criminal trial courts operate, putting the prosecution against the defense.

The legal system of Canada is pluralist: its foundations lie in the English common law system (inherited from its period as a colony of the British Empire), the French civil law system (inherited from its French Empire past), and Indigenous law systems developed by the various Indigenous Nations.

The Constitution of Canada is the supreme law of the country, and consists of written text and unwritten conventions. The Constitution Act, 1867 (known as the British North America Act prior to 1982), affirmed governance based on parliamentary precedent and divided powers between the federal and provincial governments. The Statute of Westminster 1931 granted full autonomy, and the Constitution Act, 1982 ended all legislative ties to Britain, as well as adding a constitutional amending formula and the Canadian Charter of Rights and Freedoms. The Charter guarantees basic rights and freedoms that usually cannot be over-ridden by any government—though a notwithstanding clause allows Parliament and the provincial legislatures to override certain sections of the Charter for a period of five years.

Jus soli (English: /dʒʌs ˈsoʊlaɪ/ juss SOH-ly or /juːs ˈsoʊli/ yooss SOH-lee, Latin: [juːs ˈsɔliː]), meaning 'right of soil', is the right of anyone born in the territory of a state to nationality or citizenship. Jus soli was part of the English common law, in contrast to jus sanguinis ('right of blood') associated with the French Civil Code of 1804.

Jus soli is the predominant rule in the Americas; explanations for this geographical phenomenon include: the establishment of lenient laws by past European colonial powers to entice immigrants from the Old World and displace native populations in the New World, along with the emergence of successful wars of independence movements that widened the definition and granting of citizenship, as a prerequisite to the abolishment of slavery since the 19th century.