What is the name for a set of written rules that govern how laws are made and set out citizens' rights and duties?

A constitution is essentially the rulebook for a country. Think of it as the ultimate set of laws that dictates how a country is run, how laws are made, and what the rights and responsibilities of its citizens are. It's the foundation upon which all other laws are built. The UK doesn't have a single, written constitution in one document like the United States does. Instead, it has an "unwritten" constitution, which is made up of various statutes, common law, conventions, and historical documents like the Magna Carta of 1215 and the Bill of Rights of 1689. These documents, along with legal precedents and parliamentary acts, collectively function as the UK's constitution. So, while "The Law" might seem like a tempting answer, it's too broad. A constitution is a specific framework *for* the law, not just the law itself. "Story" and "History" are obviously incorrect, as they don't relate to the legal and governmental structure of a country.