Sentence:  The resultant town , platted in 1847 and named for the patron of Father Galtier 's mission , St. Paul , was to become an important <WSD>center</WSD> of the fur trade and was to take on a new interest for those Selkirkers who remained at Red River . 
Meaning of the word marked with <WSD> tags:  an area that is approximately central within some larger region