Columbia Commonwealth

The  was one of the thirteen commonwealths of the pre-war United States of America. Created in the early 21st century, it was comprised of the former states of Washington, D.C., Maryland and Virginia.

Appearances
Parts of the Columbia Commonwealth appear in Fallout 3.

Behind the scenes
Bethesda Game Studios, the developer of Fallout 3, is headquartered in real-life Rockville, Maryland, although the name comes from Bethesda, Maryland, where the company was originally founded in 1985.