Editing History of Asia (section)

====Korea====
{{main|Goryeo}}

=====[[Three Kingdoms of Korea]]=====
[[File:History of Korea-476.PNG|thumb|Korean peninsula in 476 AD. There are three kingdoms and Gaya Union in the picture. This picture shows the heyday of [[Goguryeo]]]]
The three Kingdoms of Korea involves [[Goguryeo]] in north, [[Baekje]] in southwest, and [[Silla]] in southeast Korean peninsula. These three kingdoms act as a bridge of cultures between China and Japan. [[Prince Shōtoku]] of Japan had been taught by two teachers. One was from [[Baekje]], the other was from [[Goguryeo]]. Once Japan invaded [[Silla]], Goguryeo helped Silla to defeat Japan. [[Baekje]] met the earliest heyday of them. Its heyday was the 5th century AD. Its capital was [[Seoul]]. During its heyday, the kingdom made colonies overseas. Liaodong, China and Kyushu, Japan were the colonies of [[Baekje]] during its short heyday. [[Goguryeo]] was the strongest kingdom of all. They sometimes called themselves as an Empire. Its heyday was 6th century. King Gwanggaeto widened its territory to north. So Goguryeo dominated from Korean peninsula to Manchuria. And his son, [[Jangsu of Goguryeo|King Jangsu]] widened its territory to south. He occupied [[Seoul]], and moved its capital to [[Pyeongyang]]. Goguryeo almost occupied three quarters of South Korean peninsula thanks to king Jangsu who widened the kingdom's territory to south. [[Silla]] met the latest heyday. King Jinheung went north and occupied[[Seoul]]. But it was short. [[Baekje]] became stronger and attacked Silla. Baekje occupied more than 40 cities of Silla. So Silla could hardly survive.
China's Sui dynasty invaded [[Goguryeo]] and [[Goguryeo–Sui War]] occurred between Korea and China. [[Goguryeo]] won against China and [[Sui dynasty]] fell. After then, [[Tang dynasty]] reinvaded [[Goguryeo]] and helped [[Silla]] to unify the peninsula. [[Goguryeo]], [[Baekje]], and Japan helped each other against Tang-Silla alliance, but [[Baekje]] and [[Goguryeo]] fell. Unfortunately, [[Tang dynasty]] betrayed [[Silla]] and invaded Korean peninsula in order to occupy the whole Korean peninsula ([[Silla-Tang war]]).{{citation needed|date=November 2021}} Silla advocated 'Unification of Three Korea', so people of fallen Baekje and Goguryeo helped Silla against Chinese invasion. Eventually Silla could beat China and unified the peninsula. This war helped Korean people to unite mentally.{{citation needed|date=November 2021}}

=====North-South States Period=====
[[File:History of Korea-Inter-country Age-830 CE.gif|thumb|left|[[Balhae]] in the north, [[Later Silla]] in the south]]
[[File:Korea - Seoul - National Museum - Incense Burner 0252-06a.jpg|thumb|right|the [[Goryeo ware]], which shows splendid culture of [[Goryeo]] in mediaeval Korea.]]

The rest of [[Goguryeo]] people established [[Balhae]] and won the war against Tang in later 7th century AD. [[Balhae]] is the north state, and [[Later Silla]] was the south state. Balhae was a quite strong kingdom as their ancestor Goguryeo did. Finally, the Emperor of Tang dynasty admits Balhae as 'A strong country in the East'. They liked to trade with Japan, China, and Silla. Balhae and Later Silla sent a lot of international students to China. And Arabian merchants came into Korean peninsula, so Korea became known as 'Silla' in the western countries. Silla improved Korean writing system called Idu letters. Idu affected [[Katakana]] of Japan. [[Liao dynasty]] invaded [[Balhae]] in early 10th century, so [[Balhae]] fell.

=====Later Three Kingdoms of Korea=====
The unified Korean kingdom, Later Silla divided into three kingdoms again because of the corrupt central government. It involves [[Later Goguryeo]] (also as known as "Taebong"), [[Later Baekje]], and Later Silla. The general of [[Later Goguryeo]], Wang Geon took the throne and changed the name of kingdom into [[Goryeo]], which was derived by the ancient strong kingdom, [[Goguryeo]], and Goryeo reunified the peninsula.

=====Goryeo =====
{{main|Goryeo}}
[[Goryeo]] reunited the Korean peninsula during the later three kingdoms period and named itself as 'Empire'. But nowadays, Goryeo is known as a kingdom. The name 'Goryeo' was derived from [[Goguryeo]], and the name [[Korea]] was derived from Goryeo. Goryeo adopted people from fallen [[Balhae]]. They also widened their territory to north by [[Goryeo–Khitan War|defending Liao dynasty]] and attacking the [[Jurchen people]]. Goryeo developed a splendid culture. The first metal type printed book [[Jikji]] was also from Korea. The [[Goryeo ware]] is one of the most famous legacies of this kingdom. Goryeo imported Chinese government system and developed into their own ways.

During this period, laws were codified and a civil service system was introduced. Buddhism flourished and spread throughout the peninsula. The [[Tripitaka Koreana]] is 81,258 books total. It was made to keep Korea safe against the Mongolian invasion. It is now a UNESCO world heritage. Goryeo won the battle against [[Liao dynasty]]. Then, the [[Mongolian Empire]] invaded Goryeo. Goryeo did not disappear but it had to obey Mongolians. After 80 years, in 14th century, the Mongolian dynasty Yuan lost power, King Gongmin tried to free themselves against Mongol although his wife was also Mongolian. At the 14th century, [[Ming dynasty]] wanted Goryeo to obey China. But Goryeo didn't. They decided to invade China. Going to China, the general of Goryeo, Lee Sung-Gae came back and destroyed Goryeo. Then, in 1392, he established new dynasty, [[Joseon]]. And he became [[Taejo of Joseon]], which means the first king of [[Joseon]].