Unified Silla
North Korean historians criticize the term "Unified Silla". traditionally "Unified Silla" considered as first unified kingdom of Korean people. According to north korean's perspective, Goryeo is the first unification of Korean people, since Balhae still existed after the establishment of "Unified Silla", despite occupying territory north of the Korean peninsula. North Korean historians uses "Late Silla", using the word "late" means Silla never unifies Korean people as a whole. North Koreans acknowledges Goryeo is the first country that unifies Korean people.