What are three cases that must be tried in federal court?

What are three cases that must be tried in federal court?What are three cases that must be tried in federal court?
1. Diversity jurisdiction (that is a citizen of one state sues another, within the jurisdiction of the court -- over $75,000).





2. Federal Question -- the case presented involves a question of federal law.





3. Specific jurisdiction. A Federal statute gives the federal court exclusive jurisdiction over a claim or cause of action.