Why was it called common law?

Common law is called so because it originated in England and was developed to create a uniform system of law that applied to all people, rather than being based on local customs or statutes. This system emerged in the Middle Ages when royal judges traveled to hear cases and established precedents, leading to a common set of legal principles. Over time, these principles evolved into a body of law that was common to the entire realm, distinguishing it from other legal systems based on statutes or local practices.