Final answer:
True, one in five Americans live in the BosWash megalopolis which stretches from Boston to Washington, D.C.
Step-by-step explanation:
True.
The BosWash megalopolis refers to a continuous urban area that stretches from Boston to Washington, D.C. It is one of the most densely populated and economically significant regions in the United States. Approximately one in five Americans live in this megalopolis, which includes major cities such as New York City, Philadelphia, and Baltimore.