The Qin Dynasty (2265438 BC+0-207 BC) was the first unified dynasty in the history of China, which was developed by the State of Qin at the end of the Warring States Period. It has been passed down for three generations, two emperors and one king, and the country lasted for 14 years.

Qin was originally a vassal state of the Zhou Dynasty. After Qin Shihuang succeeded to the throne, from 230 BC to 22 BC1year, he successively conquered the six countries of Kanto, completed the unification of China, attacked Xiongnu in the north and Baiyue in the south, and established an unprecedented huge dynasty in China. Because the royal family of the Qin Dynasty is the surname of Won, it is not called Won Qin in the history books to distinguish other countries from the regime of Qin State? . After the death of Qin Shihuang, Qin Ershi, Hu Hai and Zhao Gao conspired to tamper with the Qin law, which led to the peasant uprising at the end of Qin Dynasty. In 207 BC, Zi Ying, king of Qin, surrendered to Liu Bang, and the Qin Dynasty perished.

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The Qin dynasty set up three officials and nine ministers in the central government to manage state affairs; Partially abolish the enfeoffment system and replace it with the county system; Implement books in the same language, cars in the same track and unified measurement. Attack the Huns in the north, conquer hundreds of places in the south, build the Great Wall to repel foreign enemies, and dig Lingqu to connect the water system.

The establishment of centralization laid the basic pattern of China's political system for more than 2,000 years, and laid the ruling foundation of China's unified dynasty, so it was called "the implementation of Qin politics and law in past dynasties". The Qin Dynasty ended the 500-year-old warlord regime since the Spring and Autumn Period and the Warring States Period, and became the first centralized country in China's history, which had a far-reaching impact on China's history.