First, the general law of the unification of ancient feudal countries in China

(A) the general reasons for the unification of ancient feudal countries in China.

China is a unified multi-ethnic country, and reunification is an irresistible historical trend in the historical development of China. In the feudal society of China, there were four times of unification. The reasons for the unification of Qin and Han Dynasties, Western Jin Dynasty, Sui and Tang Dynasties, Yuan, Ming and Qing Dynasties and some local areas have their own laws to follow:

1, the improvement of social productive forces, the development of social economy and the strengthening of economic ties between regions are the fundamental reasons for the unification of feudal countries.

2. Developing ethnic relations, strengthening ethnic integration and enhancing national cohesion and centripetal force are the basic reasons.

3. Long-term separatist melee, the people have suffered from war, and the people's desire for reunification is an important reason.

4. The realization of partial reunification during the split period provided conditions for great reunification.

5. The reforms carried out by the former regime promoted social and economic development and laid the foundation for great reunification.

6. The individual talents of the founders of the unified dynasty also played an important role.

The first four points of the above general reasons can be regarded as unified objective factors, and the last two points can be regarded as unified subjective factors. At the same time, the above general reasons can also be regarded as the general factors that gave birth to reunification during the separatist period.

(2) The overall influence of the unification of ancient feudal countries in China.

1, maintaining social stability.

2. It promotes the economic development and the progress of social productive forces.

3. Ethnic integration and economic and cultural exchanges between different regions have been strengthened, which has promoted the development of a unified multi-ethnic country.

It has promoted the development of foreign exchanges and played an important role in resisting foreign aggression and improving international status.

It is beneficial to the development of science, technology and culture.

(3) The general reason why China's ancient unification can become the mainstream and be maintained.

1, the continuous strengthening of the authoritarian centralized system.

2. Confucian thought of "great unification".

3. The strong cohesion and centripetal force of the Chinese nation.

4. The efforts and struggles of a group of outstanding emperors.

(D) Understand the national unity in ancient China.

1. Unification has always been the mainstream of China's historical development.

2. Unification is an irresistible historical trend in the historical development of China.

3. The unified dynasty in ancient China had a far-reaching influence on later generations.

4. The scope of China's ancient unification has been expanding.

Second, the general law of the division of ancient feudal countries in China.

(A) the general reasons for the division of China in ancient times.

The feudal society in China experienced three great divisions, namely, the Spring and Autumn Period and the Warring States Period, the Three Kingdoms, the Eastern Jin Dynasty, the Sixteen Kingdoms, the Southern and Northern Dynasties and the Five Dynasties of Liao, Song, Xia and Jin. The general reasons for their appearance are as follows:

1, the dispersion of feudal natural economy is the root cause of division.

2. The vicious expansion of local separatist forces and the weakening of authoritarian centralization are important reasons.

3. The struggle for power and profit within the feudal ruling class weakened centralization.

4. With the rise of ethnic minority regimes, ethnic contradictions are sharp and intensified.

5. Ethnic integration is unstable and the level of social productivity is underdeveloped.

(2) The general influence of ancient feudal regime in China on society.

1, affecting economic and cultural exchanges in various regions.

2, affect people's production and social life.

3, hinder the development of productive forces.

4. The integration of all ethnic groups has been continuously strengthened.

5. The feudal mode of production continued to expand to the frontier.

6. There is unity in division.

We should not simply deny the division of the ancient feudal state in China, but make a concrete analysis, not only to analyze the serious harm caused by the division of the state to society, but also to see the objective development of history in the process of the division of the state.