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 better source of supply for many goods than either <WSD>Canada</WSD> or England . 
Meaning of the word marked with <WSD> tags:  a nation in northern North America; the French were the first Europeans to settle in mainland Canada