Common law and statute
The common law is the law declared by judges, derived from custom and precedent. It originated with the legal reforms of King Henry II in the 12th century and was called “common” because it applied equally across the whole country
What Is Common Law?
Common law is a body of unwritten laws based on legal precedents established by the courts. Common law influences the decision-making process in unusual cases where the outcome cannot be determined based on existing statutes or written rules of law. The U.S. common-law system evolved from a British tradition that spread to North America during the 17th- and 18th-century colonial period. Common law is also practiced in Australia, Canada, Hong Kong, India, New Zealand, and the United Kingdom.