I want to know the answer to the following question:
How large is the zone in Canada?
All the background I'm provided with is that "The range is mostly located in the United States but extends into southeastern Canada, forming a zone from 100 to 300 mi (160 to 480 km) wide, running from the island of Newfoundland 1,500 mi (2,400 km) southwestward to Central Alabama in the United States.[discuss]". Is that enough to answer the question?
Answer: yes