Another dynasty in this nation was forced to sign the Treaty of Kanghwa and earlier created a phonetic alphabet under Sejong.
One dynasty in this territory made use of the kolp'um system, which included classes known as songgol and chingol in its bone rank. Another dynasty in this nation was forced to sign the Treaty of Kanghwa and earlier created a phonetic alphabet under Sejong. This territory was the site of a war that was ended by a truce at Panmunjom. That war in this location saw a push to the Yalu River by UN forces that had made an amphibious landing at Inchon under Douglas MacArthur. For 10 points, name this peninsula once ruled by the Silla and Choson dynasties, which is split into two countries by a demilitarized zone at the 38th parallel.
One dynasty in this territory made use of the kolp'um system, which included classes known as songgol and chingol in its bone rank.
Korean peninsula [or Hangook bando; or Choson bando]