Song Dynasty
(Song)
969 AD - 1279 AD
After the fall of the T'ang dynasty, China entered into a era of disunion which lasted from 907-960 AD. At the end of the era, a new dynasty, the Sung, partially came to power. Its capital was Kaifeng on the Yellow River, and it managed to rule a large area more or less strongly for 170 years. This period is called the Northern Sung (960-1127). In 1127 it lost the northern part of China to a new empire, the Chin, and moved the capital to the south in Hangchow. For another one hundred and fifty years, the Sung ruled in the south in the period known as the Southern Sung (1127-1279). But the southern empire fell to the same empire that swept over northern China in the thirteenth century: the Mongols. The period of the Sung dynasty is not a period of power or steadiness. The Sung never managed to take over the territories that had been lost in the later T'ang, and they were constantly distracted by warfare with northern tribes.
http://library.thinkquest.org/12255/library/dynasty/sung.html
By : Era and Stefan