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1390 CE
1400 CE
1410 CE
1420 CE
1430 CE
1440 CE
1450 CE
1460 CE
1470 CE
1480 CE
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1500 CE
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1560 CE
1392 CE - 1550 CE: Early Joseon Period in Korea.
1392 CE - 1398 CE: Reign of King Taejo, founder of the Joseon Dynasty.
1398 CE: Strife of the Princes in Korea; Taejo's sons fight to become their father's heir.
1398 CE - 1400 CE: Reign of King Jeongjong of Joseon.
1400 CE: The Second Strife of the Princes in Korea.
1400 CE - 1418 CE: Reign of King Taejong of Joseon.
1418 CE - 1450 CE: Reign of Sejong the Great.
1419 CE: The Gihae Expansion, Tsushima comes under Joseon control.
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.
1450 CE - 1452 CE: Reign of King Munjong of Joseon.
1452 CE - 1455 CE: Reign of King Danjong of Joseon.
1455 CE - 1468 CE: Reign of King Sejo of Joseon.
1494 CE - 1506 CE: Reign of King Yeonsangun of Joseon.
1494 CE: The First Literati Purge of the Early Joseon Period.
1506 CE - 1544 CE: Reign of King Jungjong of Joseon.
1544 CE - 1545 CE: Reign of King Injong of Joseon.
1545 CE - 1567 CE: Reign of King Myeongjong of Joseon.