Where is Boswash located?

Boswash, also known as the Northeast Megalopolis or the Atlantic Seaboard Megalopolis, is a densely populated region of the United States that stretches along the Atlantic coast from Boston to Washington, D.C. It includes the metropolitan areas of Boston, New York City, Philadelphia, Baltimore, and Washington, D.C., as well as dozens of smaller cities and towns. The region has a total population of over 50 million people and is one of the most economically and culturally important areas in the world.