Original sentence: By 1950, they had established a base of operations at the Hancock County Airport near Bar Harbor.The route proved so popular, especially among those from Maine who had daily jobs in Boston, that, by 1972, the airline expanded its route system by 350 percent, including seven cities and becoming an international airline, with a flight from Boston to Quebec City, Quebec, Canada
Edited sentence: By 1950, they had established a base of operations at the Hancock County-Bar Harbor Airport.The route proved so popular, especially among those from Maine who had daily jobs in Boston, that by 1972, the airline expanded its route system by 350 percent, including seven cities and becoming an international airline, with a flight from Boston to Quebec City, Quebec, Canada