Sentence:  The resultant town , platted in 1847 and named for the patron of Father Galtier 's mission , St. Paul , was to become an important center of the fur <WSD>trade</WSD> and was to take on a new interest for those Selkirkers who remained at Red River . 
Meaning of the word marked with <WSD> tags:  the commercial exchange (buying and selling on domestic or international markets) of goods and services