Nomadic empire
The Xiongnu were a confederation of nomadic tribes from Central Asia with a ruling class of unknown origin and other subjugated tribes. They lived on the Mongolian Plateau between the 3rd century BC and the 460s AD, their territories including modern day Mongolia, southern Siberia, western Manchuria, and the modern Chinese provinces of Inner Mongolia, Gansu, and Xinjiang. The Xiongnu was the first unified empire of nomadic peoples. Relations between early Chinese dynasties and the Xiongnu were complicated and included military conflict, exchanges of tribute and trade, and marriage treaties. When Emperor Qin Shihuang drove them away from the south of the Yellow River, he built the famous Great Wall to prevent the Xiongnu from coming back.
List of ancient great powers
The Great Wall of China had been constructed to protect Chinese towns from the Xiongnu attacks. While the Chinese were trying to bring the Xiongnu under control, something of high significance happened: cross-cultural encounters. A large variety of people (such as traders, ambassadors, hostages, parents in cross-cultural marriages, etc.) served as helpers that passed on ideas, values, and techniques across cultural boundary lines. These encounters helped cultures learn from other cultures. Xiongnu empire disintegrated into two parts during the 1st century, eventually the Xiongnu fell due to the defeat in the Han–Xiongnu War.Huns were nomadic people who were known for their hordes of mounted archers. Their language seems to be Turkic; but Mongolic, Yeniseian, Uralic etc., are also postulated. After 370 under a certain Balamber they founded an empire in the East Europe defeating Alans and Goths. They triggered the great migration which eventually caused the collapse of the West Roman Empire.