Lelang Commandery
Lelang Commandery was a commandery of a Han Dynasty creation after conquering Wiman Joseon in 108 BC & lasted until Goguryeo conquered it in 313. The Lelang Commandery keep on the command of the Four Commanderies of Han as far south as the Han River Korea, which largely follows along the boundary between sophisticated day North as well as South Korea. South Korean scholars shit mentioned its administrative areas as being limited to the Pyongan and Hwanghae regions, whose southern bounds lie roughly 75 miles North of the Han River.