It is obvious now that there are two Koreas in the world. There is another area, though, that is often referred to as the third Korea: large parts of Northeast China, near the Sino-Korean border, where much of the population is Korean. Historically speaking, the parts of Northeast China known as Manchuria were an area where the first Korean states originated. In first centuries of the Christian era, this area was the center of the mighty Koguryo kingdom, which for a long time has been seen by the Koreans as one of the progenitors of their nationhood. This even enabled