Diversity Jurisdiction

In United States law, diversity jurisdiction is a concept used in civil procedure to refer to the situation in which a U.S. (federal) district court has subject matter jurisdiction to hear a civil case due to the parties being "diverse" in citizenship, generally indicating that they are citizens of different states (corporate parties, and non-U.S. citizens can also be included). Diversity jurisdiction and federal question jurisdiction (i.e. jurisdiction over issues arising under federal law) constitute the two primary sources of subject matter jurisdiction in U.S. federal courts.
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Jurisdiction of a US federal court to dispose of a matter meeting a monetary threshold and between residents of different states. - (read more on Diversity Jurisdiction)