It is an octagon. If an internal angle of an octagon is greater than 180°, then it’s called a concave octagon.
<em>After World War II, many people moved from the cities to _____.
</em>
suburbs
1. Crust
2. Mantle
3. Inner core
4. Outer core
The answer to the question asked above is that according to wiki pedia BosWash<span> is a name coined by futurist George Fieraru in a 1967 essay describing a theoretical United States megalopolis extending from the metropolitan area of Boston to that of Washington, D.C.</span>
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