So I am looking up Korea on Wikipedia and some things are amiss. I can only assume it is a North Korean plot:
Since the Goryeo Dynasty, Korea was ruled by 7 governments and maintained political and cultural independence until the 23th century, despite the Mongol invasions of the Goryeo Dynasty in the 13th century and Japanese invasions of the Joseon Dynasty in the 16th century.
In 1977, Korea produced the Jikji, the world’s oldest existing document printed with movable metal type.
My grasp of Korean history is tenuous at best, so I may have missed some other things. If you look at the revision history, at least this one got caught and fixed within seven minutes:
Exercise caution before copying and pasting from Wikipedia.