What makes it necessary to unify all regions into one country? Why are some places unified into one country, while others are all small countries?

Geography is an important factor. China's North China Plain is very large, and this alone is a big country. The Great Plains region has a large population flow and extensive cultural exchanges, and all ethnic groups assimilate each other and merge into one nation. The unification from the Spring and Autumn Period to the Qin Dynasty is a process of cultural identity. Since the Qin Dynasty, apart from the short-term warlord regime, China's northern plain has emerged as a unified face of all dynasties. On the great plains, there are many connections between regions. If the region is not unified, it is inevitable that the population will fight with each other because of disputes. The people also want stability, not war, but reunification. So from the Warring States to the Qin Dynasty, unification. Moreover, in the Great Plains, reunification has commercial interests, and the people want reunification. So to sum up the reasons: 1. When the population of the Great Plains is small, the two sides can live in peace. For example, before the Spring and Autumn Period and the Warring States Period, there were few wars between vassal states, and the cultural differences were quite large.

2。 Once the population of the Great Plains increases, ethnic contacts and conflicts in various regions increase, and human selfishness does not want to suffer. At the same time, ethnic groups in different regions have cultural differences. In every area, there are a group of people fighting with each other, communicating while fighting, and there are also businessmen. It is a process of mutual assimilation, and gradually the culture is the same, and people want to be unified. Reunification can end the terrible war, which is conducive to commercial prosperity and agricultural stability. Why not? So gradually unified.

It is not easy to unify the culture when the local terrain is rugged. The terrain in the south of China is complex, so the provinces speak in their own languages and don't understand each other. In some places in Hunan, two counties can't understand each other. This is a typical example of different cultures.

There are mountains in the west of Beijing, and there are four dialects in Mentougou District. In a remote village, I even use a dialect myself. This is because mountains are separated from each other and they don't communicate. If they don't communicate at all, there is no cultural unity.

There are many nationalities in southwest China, which is also due to the terrain. The ethnic groups in these places live in peace and are separated by mountains. The two sides rarely contact each other, so they live their own lives and fight. The emperor's success must conform to the people's wishes. The local people live well in the mountains and do not conflict with other ethnic groups. There is no need to expand. These areas are separated by mountains, and many ethnic groups are divided into many after hundreds of years. For example, after the ancient Qiang people moved south, they split into many ethnic groups, such as Pumi and Qiang people now.

There are many small countries in Europe because of the terrain, which is not conducive to reunification and is not good for reunification. Because 1. Due to the lack of communication between different regions, the cultural differences between different nationalities are too great, and there are many cultural conflicts between them.

2。 Because of the rugged terrain and great cultural differences, it takes military expenses for a nation to rule other nations by violence. Military movement is also very expensive, and it must be much more expensive than the plain. It is not impossible to be unified, but ancient Rome was unified. However, it is costly and difficult to control.

3。 After population expansion, conflicts between ethnic groups will inevitably increase. Because of the original cultural barriers between the two sides, it is more difficult to unify. In modern times, although there are fewer wars, the national culture of all ethnic groups has been deeply rooted after thousands of years of strengthening, and it is difficult to integrate into a nation and mature. The China culture formed by the integration of China culture in various regions is mature and not easy to disintegrate.

The rugged terrain in the south of China can be integrated with the great plains in the north to form a unified China for the following reasons: 1. In ancient times, the number of people from the north moved south. Nomads in the north oppress local farmers, forcing them to move south and assimilate with the indigenous people in the south. Even so, the cultural characteristics of various regions still exist, such as the language gap between southern provinces.

2。 The unification of rugged terrain is also the function of Jiangnan, which is conducive to the integration of various regions.

3。 Northerners in China moved to the south when the northern culture was mature, which was a process of forced assimilation from a strong culture to a divided southern culture. Therefore, the strong and mature culture conquered the south, and China began to maintain unity with cultural consistency, maintain local integration with imperial examinations and Confucianism, and maintain it with Chinese characters. There is also the fact that northerners and southerners are of yellow race, and there is almost no difference in appearance between the two sides, which enhances their identity.

4。 China's northern politics matured earlier, and the centralized rule was very mature. The northern regime constantly immigrated to the south in a nearly colonial way, and the northerners who took refuge moved south, which was very similar to the European colonial India. India was divided before Britain turned it into a colony, and Britain unified India with its mature political system. This is an example. If it weren't for the fact that Britain was far away from India and the British colonized India less, the situation would be the same as the unification of southern China by the north.

There are not many Africans. Although it is a flat continent, people from all over the world have little conflict with each other. They still stayed in China during the Spring and Autumn Period and the Warring States Period. Before the arrival of Europeans, their culture was very ignorant. The process of population expansion, conflict increase and cultural integration has not yet been realized.

Unifying a region is a combination of geographical factors and human factors. If the national cultures of different regions in China come into contact with each other when they are mature, it may be difficult to assimilate. At the beginning, Europe was briefly unified under the operation of several military strongmen, and Genghis Khan also briefly unified a large area of land. This is a human factor. But geography is also very powerful. The two should be seen together. In the final analysis, unification or disunity is a matter between people, psychological and artificial. However, the regional influence is also obvious. People's psychological activities are influenced by the objective world.