In the U.S., a state court has jurisdiction over disputes which have a connection to a state. Cases are heard before and evidence is presented in a trial court, which usually located in a courthouse in the county seat. Territory outside of any state in the United States, such as the District of Columbia or American Samoa, often have courts established under federal or territorial law which substitute for a state court system, distinct from the ordinary federal court system.
If one of the litigants is unsatisfied with the decision of the lower court, the matter may be taken up on appeal (but an acquittal in a criminal trial may not be appealed by the state due to the Fifth Amendment protection against double jeopardy). Usually, an intermediate appellate court, if there is one in that state, often called the state court of appeals, will review the decision of the trial court. If still unsatisfied, the litigant can appeal to the highest appellate court in the state, which is usually called the state supreme court. Appellate courts in the United States, unlike their civil law counterparts, are generally not permitted to correct mistakes concerning the facts of the case on appeal, only mistakes of law, or findings of fact with no support in the trial court record.