Yeonguijeong

Yeonguijeong was a title created in 1400, during the Joseon Dynasty of Korea (1392-1910) and given to the Chief State Councillor as the highest government position of "Uijeongbu" (State Council). Existing for over 500 years, its function can be compared to that of a present day "Prime Minister of South Korea". Only one official at a time was appointed to the position and though was generally called Yeongsang, was also referred to as Sangsang, Sugyu or Wonbo. Although, the title of Yeonguijeong was defined as the highest post in charge of every state affairs by law, its practical functions changed drastically depending on the particular King and whether that King's power was strong or weak.