An act of intrusion or encroachment.
Illegal Indian trade within the area over which the Hudson's Bay Company held a trade monopoly.
The action of intervening; interfering in some course of events.
An orchestrated attempt to convince somebody with an addiction or other psychological problem to seek professional help and/or change their behavior.
An action taken or procedure performed; an operation.
A legal motion through which a person or entity who has not been named as a party to a case seeks to have the court order that they be made a party.