1. People have thought, and still do think, that Korea is not an ancient civilization but Korea has many traits that qualify it as
an Ancient Civilizationone. ,Korea starts at the time where it needs to, to qualify as an ancient civilization, ithas advanced cities that make up Ancient Korea in the cities there were complex institutions with specialized workers; some of the specialized workers also worked on record keeping, and also,people studied to make better and more advanced technology.
Careful of repetition.