Korea
From Halopedia, the Halo wiki
Korea is a country in Northeastern Asia situated on the Korean Peninsula on Earth.
History
Korea was divided into two countries, North Korea and South Korea, in 1945 and remained this way for many years. However, the two countries reunified at some stage before the events of the Human-Covenant War to form United Korea.
The UNSC has a number of locations in Korea, namely, the Special Warfare Center in Songnam, Kyonggi Province. This is where the MJOLNIR Mark VI was tested by ONI before it was sent to Cairo Station for use by SPARTAN-117.