Northeast megalopolis
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The Northeast megalopolis, also known as the Northeast Corridor, Acela Corridor, Boston–Washington corridor, BosWash, or BosNYWash, is the world's largest megalopolis by economic output and the most populous megalopolis exclusively within the... Wikipedia
Area: 56,200 mi²
Population: about 50 million residents
Federal districts: Washington, D.C.
Largest city: New York City (8,804,190)