Question: who is sejong the great?
Answer: Sejong the Great (Korean pronunciation: [se(ː)dʑoŋ]; 15 May 1397 – 8 April 1450) was the fourth king of the Joseon dynasty of Korea. ... During his reign from 1418 to 1450, he governed along with his father, the King Emeritus Taejong from 1418 to 1422, then governing as the sole monarch from 1422 to 1450.