What is a one-sentence summary of the following article?
In common usage, especially in the United States, municipal or municipality, refers to a city or town. However, in the realm of international law, municipal refers to any sovereign entity, including countries, states, counties, provinces, cities, and towns. In short, municipal refers to the internal law of a sovereign government. There are two primary forms of municipal, or domestic, law. The first is civil law, composed of the statutory law and regulations to administer those laws. Statutes are passed either by the legislative bodies of the state or by popular vote. Domestic law is also formed by the common law, which is law handed down by the lower and upper courts of the country. Common types of municipal law are criminal statutes, traffic laws, and government regulations. Basically, municipal law regulates the relationship of citizens with the government. Civil and common law are enforced in very different ways. For example, law enforcement agencies, ranging from local police to the federal investigative branches, have jurisdiction over civil criminal statutes. On the other hand, most common law, often called judge-made law, is referred to during legal issues such as contract law or disputes between domestic businesses.

Summary:
Define municipal law. Familiarize yourself with the basics of municipal law. Understand the enforcement mechanisms of municipal law.