Why were there many types of ethnic minorities in the south in Chinese history, but the regimes they established rarely unified the Central Plains?

1. Because Zhao Tuo of the Qin Dynasty entered Guangdong. This led to the dominance of the Han people in Guangdong and the separation of the ethnic minorities in Fujian and Jiangxi from the ethnic groups in Xiangxi, Guizhou and Yunnan. It is equivalent to having a nail in the back of these ethnic minorities;

2. The plains south of the Yangtze River are scarce and cannot support a large population. It is impossible to imagine that the ethnic minorities in Mobei rely on the grassland and herd a large number of horses. In a feudal society, without a large population and grasslands to support horses, there would not be a large number of infantry and cavalry. Without soldiers, how can we strive for hegemony?

3. The population in the north has always been in an absolutely strong position. No opportunity was given to the ethnic minorities in the south;

4. However, there is a special case, that is, Nanzhao-Dali unified Yunnan for hundreds of years, and there was a trend of Bai nationality in Yunnan. If it were not for the Mongolian invasion, and the later Ming Dynasty The large number of immigrants from North Korea to Yunnan is very likely to cause the Bai nationality of Yunnan, and the Bai nationality will become the dominant ethnic group in Yunnan, haha, but now the Bai nationality has been Sinicized.

I think there are several aspects to the formation of the Bai nationality in Yunnan. First, Zhao Tuo of the Qin Dynasty took control of Guangdong. Guangdong has been dominated by Han people since then, dividing the unified connection between Jiangxi, Fujian and the Yunnan and Guizhou ethnic minorities. , during the Three Kingdoms period, Liu Bei entered Shu and brought a large number of Han people with him, and the Han forces established a firm foothold in Sichuan. The migration of Han people to the south during the Eastern Jin and Southern and Northern Dynasties caused the ethnic minorities in Jiangxi and Fujian to become demographically disadvantaged. It cannot develop from now on.

So in the end only the southern ethnic minorities in Yunnan and Guizhou directions were left. That's what we see today.