There are three types of law?

there are three types of law...constitutional, civil, and criminal. Explain the differences between these three types of laws and what is their significance for law enforcement?

I disagree with this way of breaking down the law, because I do not distinguish "Constitutional" law from civil or criminal law. But here goes.

Criminal law describes a group of actions a person might do, which are prohibited by society as a whole. It exists to make sure that people do not fall below a minimum standard of behavior. Those kinds of conduct, called "crimes," are thought to be not only harmful to individuals who are the victims, but harmful to everyone because they take place. People who are found to have engaged in these acts are punished by society for their offenses to society. The justice system punishes violators of the criminal law by taking away their liberty or their property or, in some jurisdictions and for some kinds of crimes, their lives.

The Constitution requires that this only happen after a trial in which evidence is produced proving that the accused actually committed the crime, beyond a reasonable doubt. The defendant has a number of rights along the way, in part as safeguards against innocent people being convicted of crimes they did not commit. Those rights include the right to know what crime you are being charged with, what the penalty will be, the ability to review and challenge the evidence against you, the assistance of a lawyer, the right not to provide evidence that is against your own interests, and the right to present your case to a jury.

Civil law describes the way in which people relate to one another, largely in economic terms. It exists to protect peoples' property and personal rights against other people, in ways that sometimes do not concern society as a whole but do concern the individuals in question. So this area of law embraces breaches of contracts and business relationships, compensation for personal injury or damage to property caused by other people, and disputes about ownership of certain things.

Because civil cases do not always affect society as a whole the Constitition treats these cases differently. For instance, there is still a right to a jury, but there is no right against providing information against your own interests. Law enforcement authorities are also less likely to become involved in disputes of this nature.

Without all three kinds of law, resolving our disputes and keeping an orderly society would be much more difficult.

I agree that "constitutional law" really isn't a separate area of law, it's just the questions surrounding interpretation of the constitution and whether government actions violate the constitution. Criminal law involves the government, whether federal or state, prosecuting someone for an act which is considered to be an act against society, not just against the actual victim(s). Civil law involves two or more individuals or corporations seeking the court system's help to resolve a dispute.