The reason why it is Chungcheongbuk-do and Chungcheongnam-do and not Chungcheongjwa-do and Chungcheong-udo.jpg
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Chungcheong-do is clearly east and west on the map.
Surprisingly, Chungjwa and Chungwoo were correct until the Joseon Dynasty!
However, in 1896, Chungcheongnam-do became Chungcheongbuk-do by official law.
