Many people say that Qin's annexation of Bashu played a great role in unifying the six countries and greatly enhanced Qin's national strength. Is that really the case?

In the pre-Qin period, the nationalities in Bashu area were Pu, Yi, Ju, Gong, Slave, Liao, Yi, Yan, Yunnan, Liao and Bo, mostly Baipu. As early as the Yin and Zhou Dynasties, Shu had entered a class society. This enlightened dynasty, mainly in today's Sichuan, began in 666 BC, with Chengdu as its capital. Since then, Shu has become stronger and stronger. He once attacked Qin to its capital Yong (now Fengxiang South, Shaanxi Province), then took Nanzheng, and invaded Chuzhizifang (now Songzi, Hubei Province) in the east, "according to the land of Bashu", and the public grew up in Bashu. So the civilization of Bashu is not bad. More importantly, the land of Qin at that time was small and poor, occupying only a cool place. At that time, the national strength was not enough to compete with the six countries in Shandong. However, the capture of Bashu can occupy the upper reaches of the Yangtze River, the waterway can capture Chu conveniently, and the land can capture Han, Zhao and Wei, which is indeed a long-term good strategy. According to historical records, in October, a single soldier set out to attack Shu, and he took it and made Chen Zhuang associate with Shu. Shu belongs to Qin, and Qin is strong in profit, rich and thick, and despises princes. This also shows that Qin really became rich and powerful after the annexation of Bashu, and it was in an advantageous position among the Central Plains countries. Fifteen years later, Sima Cuo really attacked Chu by water, forcing Chu to move the capital. After the annexation of Bashu, Qin Jun attacked everywhere and made some gains. In nine years, Zhao Zhongdu and Xiyang were selected, and in ten years, Prince Han came to the public. Cut Korea. Hit Zhao Jiangni. Cut twenty-five cities in Quyi. Eleven years, Yan Li attacked the suburbs of Wei and fell. Defeated Han 'anmen, beheaded Wan, and ordered people to guard it. In the twelfth year, the king came to Jin. Shu Chang attacked Zhao and captured Zhao Jiangzhuang. In thirteen years, General Zhang attacked Chu in Danyang, captured the generals and beheaded 80,000. He also attacked Hanzhong, Chu, and took 600 Li of land and set it in Hanzhong County. Chu surrounded the Yong family, and Qin asked Shu Chang to help Han and Dong attack Qi until Wei attacked Yan. Fourteen years, cutting Chu and taking Zhaoling. Qin Lin's crazy siege before his death was used by later generations, and he defeated Han, Zhao, Wei, Chu and Yiqu successively, and all won the victory. These victories are closely related to the material resources and strategic position of Bashu area.