Visual Timeline: Sejong the Great

To navigate the timeline, click and drag it with your mouse, or click on the timeline overview on the bottom.

1390 CE 1400 CE 1410 CE 1420 CE 1430 CE 1440 CE 1450 CE  
1397 CE - 1450 CE: Life of Sejong the Great.
1418 CE - 1450 CE: Reign of Sejong the Great.
1419 CE: The Gihae Expansion, Tsushima comes under Joseon control.
1419 CE: The Korean navy attacks for a second time the wako pirate bases on Tsushima Island in Japan.
1420 CE: Sejong the Great creates the Hall of Worthies (Jiphyeonjeon) to act both as advisors to the king and as an academic research engine.
1443 CE: Hangul, the Korean alphabet, is finalized by Sejong the Great.
1443 CE: The Japanese and Korean governments sign the Treaty of Kyehae which permits legitimate trade with the intention of weakening the wako pirates.
1446 CE: The 'Hunmin Jeongeum' is published, introducing Hangul, the Korean alphabet.
1390 CE 1400 CE 1410 CE 1420 CE 1430 CE 1440 CE