Sentence:  During the trip Selkirk decided that the route through Illinois territory to Indiana and the eastern United States was the best route for goods from England to reach Red River and that the United States was a <WSD>better</WSD> source of supply for many goods than either Canada or England . 
Meaning of the word marked with <WSD> tags:  (comparative of `good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another