Final answer:
Federal courts handle cases involving federal laws and constitutionality, while state courts deal with state laws and everyday legal matters. Most cases occur at the state level, and neither court system creates laws.
Step-by-step explanation:
The federal and state courts in the U.S. judicial system have distinct roles and handle different types of cases within a dual court structure. State courts primarily address everyday matters such as family issues, crimes, and juvenile affairs, dealing with violations of state laws. On the other hand, federal courts get involved in cases dealing with federal laws, constitutional issues, or matters spanning across state lines. These include cases like patent infringements, bankruptcy, or disputes between states.
The notion that state courts create laws is incorrect; similar to federal courts, they interpret and apply law, not create it. Moreover, most court cases in the United States are actually adjudicated in state courts, not federal ones. It's also important to understand that federal courts can indeed hear cases related to state laws if those laws potentially conflict with the U.S. Constitution. This structure reflects the careful balance of federalism and the diversity of legal frameworks in the country.