DDURING THE SILLA PERIOD, Korea was strongly tied to Tang China and avidly copied China’s model (see “Korea” in Chapter 7). This changed along with much else in North Asia between 800 and 1400. In this period Korea lived more in the shadows of the powerful states of the Khitans, Jurchens, and Mongols than of the Chinese.

The Silla Dynasty began to decline after the king was killed in a revolt in 780. For the next 155 years, rebellions and coups d’état followed one after the other, as different groups of nobles placed their candidates on the throne and killed as many of their opponents as they could.

The dynasty that emerged from this confusion was called Koryŏ (KAW-ree-oh) (935–1392). (The English word Korea derives from the name of this dynasty.) During this time Korea developed more independently of the China model than it had in Silla times. This was not because the Chinese model was rejected; the Koryŏ capital was laid out on the Chinese model, and the government was closely patterned on the Tang system. But despite Chinese influence, Korean society remained deeply aristocratic.

The founder of the dynasty, Wang Kon (877–943), was a man of relatively obscure background, and he needed the support of the old aristocracy to maintain control. His successors introduced civil service examinations on the Chinese model, as well as examinations for Buddhist clergy, but because the aristocrats were the best educated and the government schools admitted only the sons of aristocrats, this system served primarily to solidify their control.

At the other end of the social scale, the number of people in the serf-slave stratum seems to have increased. This lowborn stratum included not only privately held slaves but also large numbers of government slaves as well as government workers in mines, porcelain factories, and other government industries. Sometimes entire villages or groups of villages were considered lowborn. There were occasional slave revolts, and some freed slaves did rise in status, but prejudice against anyone with slave ancestors was intense. In China and Japan, by contrast, slavery was a much more minor element in the social landscape.

The commercial economy declined in Korea during this period. Except for the capital, there were no cities of commercial importance, and in the countryside the use of money declined. One industry that did flourish was ceramics.

Buddhism remained strong throughout Korea, and monasteries became major centers of art and learning. As in Song China and Kamakura Japan, Chan (Zen) and Tiantai (Tendai) were the leading Buddhist teachings (see “Tang Culture” in Chapter 7). The founder of the Koryŏ Dynasty attributed the dynasty’s success to the Buddha’s protection, and he and his successors were ardent patrons of the church. The entire Buddhist canon was printed in the eleventh century and again in the thirteenth. As in medieval Europe, aristocrats who entered the church occupied the major abbacies. Monasteries played the same roles as they did in China and Japan, such as engaging in money-lending and charitable works. As in Japan (but not China), some monasteries accumulated military power.

The Koryŏ Dynasty was preserved in name long after the ruling family had lost most of its power. In 1170 the palace guards massacred the civil officials at court and placed a new king on the throne. After incessant infighting among the generals and a series of coups, in 1196 the general Ch’oe Ch’ung-hon took control. The domination of Korea by the Ch’oe family was much like the contemporaneous situation in Japan, where warrior bands were seizing power. Moreover, because the Ch’oes were content to dominate the government while leaving the Koryŏ king on the throne, they had much in common with the Japanese shoguns, who followed a similar strategy.

Korea, from early times, recognized China as being in many ways senior to it, but when strong non-Chinese states emerged to its north in Manchuria, Korea was ready to accommodate them as well. Koryŏ’s first neighbor to the north was the Khitan state of Liao, which in 1010 invaded and sacked the capital. To avoid destruction, Koryŏ acceded to vassal status, but Liao invaded again in 1018. This time Koryŏ was able to repel the nomadic Khitans. Afterward a defensive wall was built across the Korean peninsula south of the Yalu River. When the Jurchens and their Jin Dynasty supplanted the Khitans’ Liao Dynasty, Koryŏ agreed to send them tribute as well.

As mentioned in Chapter 12, Korea was conquered by the Mongols, and the figurehead Koryŏ kings were moved to Beijing, where they married Mongol princesses, their descendants becoming more Mongol than Korean. This was a time of hardship for the Korean people. In the year 1254 alone, the Mongols enslaved two hundred thousand Koreans and took them away. Ordinary people in Korea suffered grievously when their land was used as a launching pad for the huge Mongol invasions of Japan. In this period Korea also suffered from frequent attacks by Japanese pirates, somewhat like the depredations of the Vikings in Europe a little earlier (see “Invasions and Migrations” in Chapter 14).

When Mongol rule in China fell apart in the mid-fourteenth century, it declined in Korea as well. Chinese rebels opposing the Mongols entered Korea and even briefly captured the capital in 1361. When the Ming Dynasty was established in China in 1368, the Koryŏ court was unsure how to respond. In 1388 a general, Yi Song-gye, was sent to oppose a Ming army at the northwest frontier. When he saw the strength of the Ming, he concluded that making an alliance was more sensible than fighting, and he led his troops back to the capital, where in 1392 he usurped the throne, founding the Choson Dynasty.