Law.

Law can be broadly defined as a codified system of formal, institutionalized rules that regulate human society. By and large, modern legal systems are enforced on a jurisdictional basis, which can be subdivided into specific areas of inquiry including international law, the federal laws of individual nations, and the local laws of states, provinces, territories, municipalities, and other smaller-scale political divisions. Alternately, systems of law can also be classified according to the types of legal questions they govern. Prominent examples include criminal law, civil or common law, contract law, property law, and constitutional law. In most countries, modern legal systems are secular and are enforced and administered through a hierarchy of courts. Some nations, particularly in the Islamic world, use a system of religious law.