The Qin Dynasty (Chinese: 秦朝; pinyin: Qín Cháo; Wade–Giles: Ch'in Ch'ao; ) was the first imperial dynasty of China, lasting from 221 to 206 BC. The Qin state derived its name from its heartland of Qin, in modern-day Gansu and Shaanxi. The strength of the Qin state was greatly increased by the legalist reforms of Shang Yang in the 4th century BC, during the Warring States Period. In the mid and late third century BC, the Qin accomplished a series of swift conquests, first ending the powerless Zhou Dynasty, and eventually destroying the remaining six states of the major states to gain control over the whole of China, resulting in a unified China.
During its reign over China, the Qin Dynasty achieved increased trade, improved agriculture, and military security. This was due to the abolition of landowning lords, to whom peasants had formerly held allegiance. The central government now had direct control of the masses, giving it access to a much larger workforce. This allowed for the construction of ambitious projects, such as a wall on the northern border, now known as the Great Wall of China. The Qin Dynasty also introduced several reforms: currency, weights and measures were standardized, and a better system of writing was established. An attempt to purge all traces of the old dynasties led to the infamous burning of books and burying of scholars incident, which has been criticized greatly by subsequent scholars. The Qin's military was also revolutionary in that it used the most recently developed weaponry, transportation, and tactics, though the government was heavy-handed and bureaucratic.
Despite its military strength, the Qin Dynasty did not last long. When the first emperor died in 210 BC, his son was placed on the throne by two of the previous emperor's advisers, in an attempt to influence and control the administration of the entire dynasty through him. The advisors squabbled among themselves, however, which resulted in both their deaths and that of the second Qin emperor. Popular revolt broke out a few years later, and the weakened empire soon fell to a Chu lieutenant, who went on to found the Han Dynasty. Despite its rapid end, the Qin Dynasty influenced future Chinese empires, particularly the Han, and the European name for China is thought to be derived from it.
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