The reason why it is Chungcheongbuk-do and Chungcheongnam-do and not Chungcheongjwa-do and Chungcheong-udo
0
(0)
If you look at the map, Chungcheong-do is east to west.
Surprisingly, Chungjwa and Chungwoo were correct until the Joseon Dynasty!
However, in 1896, Chungcheongnam-do became Chungcheongbuk-do by official law.
