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ne of the important functions of law in any society is to provide stability, predictability, and continuity so that people can know how to order their affairs. If any society is to survive, its citizens must be able to determine what is legally right and legally wrong. They must know what sanctions will be imposed on them if they commit wrongful acts. If they suffer harm as a result of others' wrongful acts, they must know how they can seek redress. By setting forth the rights, obligations, and privileges of citizens, the law enables individuals to go about their business with confidence and a certain degree of predictability. The stability and predictability created by the law provide an essential framework for all civilized activities, including business activities.

What do we mean when we speak of "the law"? Although the law has various definitions, they are all based on the general observation that law consists of enforceable rules governing relationships among individuals and between individuals and their society. These "enforceable rules" may consist of unwritten principles of behavior established by a nomadic tribe. They may be set forth in a law code, such as the Code of Hammurabi in ancient Babylon (c. 1780 B.C.E.) or the law code of one of today's European nations. They may consist of written laws and court decisions created by modern legislative and judicial bodies, as in the United States. Regardless of how such rules are created, they all have one thing in common: they establish rights, duties, and privileges that are consistent with the values and beliefs of their society or its ruling group.

In this introductory chapter, we first look at an important question for any student reading this text: How does the legal environment affect business decision making? We next describe the major sources of American law, the common law tradition, and some basic schools of legal thought. We conclude the chapter with sections offering practical guidance on