State laws established state courts, which have extensive authority. These courts have the authority to consider cases involving everything from criminal offences to family law disagreements. In contrast, the U.S. Constitution established federal courts, which have far more limited authority.
In general, federal courts handle disputes concerning federal law, whereas state courts hear cases involving state law. Because most crimes are violations of municipal or state law, state courts typically hear criminal cases.
Both systems adopt written Rules of Court that specify the requirements for how a case must be handled.
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