The database has North Korea and South Korea, but also Korea.
Korea is blocked in the submission form as country of origin for titles made after 1948. It is listed for some recent titles, probably because it was added while there was no year attached. Perhaps it should be caught during processing.
But I noticed that Korea is also added on images, and my deletions of it were rejected. Is this meaningful? Can these additions be blocked, or can deletions at least be allowed?