(1) A unified social foundation already exists. Social productive forces are constantly improving, and the links between ethnic groups and regions are strengthened. Since the Spring and Autumn Period and the Warring States Period, successive years of merger wars, ethnic migration and ethnic exchanges have greatly strengthened the ties between the Huaxia nationality and the surrounding ethnic minorities, and the languages, customs, economies and cultures of all ethnic groups have gradually merged. A consolidated national identity with the Chinese nation as the core has basically taken shape. This laid a certain foundation for the unification of Qin State. & ltBR & gt(2) People of all ethnic groups have a strong desire for reunification. In 475 BC, the history of China entered the Spring and Autumn Period and the Warring States Period, and the vassal states merged with each other. The long-term war for hegemony has brought great pain and disaster to the people, which is not conducive to social and economic development. Ending the separatist war and realizing reunification became the strong desire of the people of all ethnic groups at that time. (3) The powerful State of Qin unified the conditions for Shang Yang to enter the Qin Dynasty, helped Qin Xiaogong to reform, and made the State of Qin come from behind, ranking first among the Seven Heroes in national strength. After the battle of Changping, Zhao's 400,000 troops were wiped out, and Qin became stronger, which no other country could compete with.
2. Establish a unified multi-ethnic country
(1) In 246 BC, Qin destroyed the Six Kingdoms, and Ying Zheng, the king of Qin, acceded to the throne.
Widely recruit and appoint foreign talents: Kuang Wei, Li Si, Wang Jian, Meng Tian, etc.
3. The territory of the Qin Dynasty is very vast. At that time, it was a world power and the first unified multi-ethnic feudal country in the history of China.