Rule 41. Dismissal of Actions
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(b) Involuntary Dismissal; Effect.  If the plaintiff fails to prosecute or to comply with these rules or a court order, a defendant may move to dismiss the action or
any claim against it. Unless the dismissal order states otherwise, a dismissal under this subdivision (b) and any dismissal not under this rule — except
one for lack of jurisdiction, improper venue, or failure to join a party under Rule 19 — operates as an adjudication on the merits.