what is the primary difference between district courts and federal courts
District Courts and Circuit Courts (or Federal courts of appeals) are part of the federal court system. District courts are lower and have the responsibility for holding trials, while circuit courts are appellate courts that do not hold trials but only hear appeals for cases decided by the lower court.
Federal courts hear cases involving violations of federal statues, crimes committed on federal property or disputes between residents of different states. State courts hear cases involving violations of state laws or disputes between two or more residents of that state. The United States District Court for the District of Minnesota is a Federal Court. This Court is completely separate from State Courts.