1 is conducive to the establishment, consolidation and development of a multi-ethnic feudal autocratic country and to safeguarding the unity and territorial integrity of the motherland.

2. It can effectively organize manpower, material resources and financial resources to engage in large-scale production activities and economic construction, which is conducive to social and economic development.

3, in a unified environment, is conducive to the integration of all ethnic groups, is conducive to regional economic and cultural exchanges.

4. It is conducive to consolidating national unity, promoting economic and cultural development, and at the same time leading to absolute monarchy. It lasted for thousands of years in the feudal society of China, with far-reaching influence.

Negative effects:

1、? Autocracy of imperial power is easy to form tyranny and corruption, which is a factor that hinders historical development.

2. Thought is exclusive, which stifles thought and suppresses creativity.

3. At the end of feudal society, it hindered the budding development of emerging capitalist relations of production, the development of social productive forces and the progress of China society.

Extended data:

Centralization was first formed in the Warring States Period. Han Fei, a representative of Legalism, put forward the idea of establishing a monarchy and centralized state.

The Qin dynasty began to establish feudal centralization: the central government set up prime ministers, imperial envoys, Qiu and other official positions, and implemented the county system in local areas. In this way, the emperor firmly controlled the power to rule all parts of the country in his own hands. Economically, unified measurement has a unified currency and unified writing. During the reign of Emperor Wu of the Han Dynasty, he executed "Enzhi" to cut down princes.

Weaken the power of the vassal States, and the enfeoffment system of the Han Dynasty existed in name only; The salt and iron official camp enabled the central government to directly manage the scarce strategic resources at that time; Since then, Confucianism has become the only thought respected by the royal family.

The measures to strengthen centralization in Sui and Tang Dynasties are as follows: the central government is divided into three provinces and six departments. The three provinces, namely Zhongshu Province, Menxia Province and Shangshu Province, are respectively responsible for drafting, reviewing and implementing government decrees; The six departments are the official department, the people's department, the ritual department, the military department, the criminal department and the industrial department, which respectively manage the examination and appointment of officials, household registration finance, etiquette imperial examination, military and political affairs, criminal law and engineering construction.

In the Northern Song Dynasty, centralization of power, military, financial and legal affairs were strengthened to prevent the situation of separatist regime in the buffer regions from repeating itself. Set up the left and right prime ministers and several prime ministers to monopolize power, and set up the Privy Council to take charge of the military alone on behalf of the emperor; Civil affairs has three departments in charge of finance. These three institutions have sent special inspectors to local governments to vertically manage the relevant government affairs of several States and governments.

On the basis of the Song Dynasty, the Yuan Dynasty merged the local functions in charge of government affairs, civil affairs, military affairs and handling cases into one institution, and named it China Province, which is the basis for the division of the local provincial system in China. The principal officials of a province are appointed and dispatched by the central government.

In the Ming Dynasty, centralization was further strengthened, and the prime minister was removed, and six ministries were directly led by the emperor (later, a cabinet was set up to assist the emperor in management). Factories and health secret service agencies were also set up to spy on the privacy and social trends of officials. During the Yongzheng period of the Qing Dynasty, the military department was established, and the emperor appointed his trusted minister as the minister of military aircraft. The military department became the highest organ of state power, and the cabinet existed in name only.

References:

Baidu encyclopedia-centralization