Answer in brief.

Why are laws necessary in society?

Laws are necessary because:

1. It ensures our rights as citizens against abuses by other people, by organizations, and by the government itself.

2. It protects our general safety, and We have laws to help provide for our general safety.

3. It exists at the local, state and national levels, and includes things like Laws about food safety, traffic rules, criminal laws etc.

4. It acts as an instruction as to what is accepted in society.

5. It avoids conflicts between social groups and communities.

6. It allows for easy adoption to changes that occur in the society.

The definition of law is "Indian law is described as the body of jurisprudence created by treaties, statutes, executive orders, court decisions and administrative action defining and implementing the relationship among the United States, Indian tribes and individuals, and the states."