Answer:
The courts only try actual cases and controversies — a party must show that it has been harmed in order to bring suit in court. This means that the courts do not issue advisory opinions on the constitutionality of laws or the legality of actions if the ruling would have no practical effect. Cases brought before the judiciary typically proceed from district court to appellate court and may even end at the Supreme Court, although the Supreme Court hears comparatively few cases each year.
Step-by-step explanation: