Southeast Commonwealth

The Southeast Commonwealth was one of the thirteen commonwealths of the pre-War United States.

Background
Created in 1969, it was comprised of the former states of Georgia, South Carolina, and North Carolina. The commonwealth bordered the Columbia Commonwealth, the East Central Commonwealth, and the Gulf Commonwealth.

Former North Carolina

 * Kitty Hawk, North Carolina is mentioned as the location of the debut flight of the Wright Flyer, created by Orville and Wilbur Wright. The Wright Flyer was the first controlled and powered aircraft, successfully staying aloft for 12 seconds on December 17, 1903. A plaque at the Museum of Technology notes that this was the first sustained flight of its kind in human history.
 * The city of Charlotte was home to the manufacturing facility of Lee Rapid Pharmaceuticals, as the town's name can be seen on the gauges of the health dispensers found throughout the Anchorage Reclamation simulation.

Former South Carolina
Mullins, South Carolina is where the MREs found in the Divide were originally manufactured, and is listed on the packaging.

Former Georgia

 * A signed baseball card found in the Commonwealth features Matt Murtagh, the star pitcher of a Boston baseball team, who was from Atlanta.
 * A man who worked as a foreman in South Boston wrote in his terminal about his experience overseas in the war, having started his military career in Georgia.
 * Jennie Brown hails from Georgia, and notes that its climate was more intense than that of the Mire.

Appearances
The Southeast Commonwealth is mentioned in the Fallout 3 add-on Operation: Anchorage, the Fallout: New Vegas add-on Lonesome Road, Fallout 4 and in the Fallout 76 updates Wastelanders and Steel Dawn.