Statutory law cannot be confused with statutory law. As an important source of law in common law countries, written law has a long history in Britain, and a large number of written laws were promulgated as early as William the Conqueror. During the reign of Henry II, the decrees were further increased. /kloc-at the end of 0/3, parliament began to participate in legislation. With the expansion of parliament's power, its power to make laws is also growing. As early as the colonial period, the United States showed a tendency to attach importance to making laws. After independence, both the Federation and the States promulgated written constitutions. Since the end of 19, Britain and the United States have not only enacted many laws and regulations, but also promulgated a large number of entrusted legislation. The status of written law is becoming more and more important.