装片染色的目的是什么:who can give me an overview of china?

China has one of the world's longest periods of mostly uninterrupted civilization and one of the world's longest continuously used written language systems. The history of China has been largely characterized by repeated divisions and reunifications amid alternating periods of peace and war, and violent imperial dynastic change. The country's territorial extent expanded outwards from a core area in the North China Plain, and varied according to its changing fortunes to include multiple regions of East, Northeast, and Central Asia. (The term "China proper" is used by some historians to describe the territory historically dominated by the majority Han Chinese, as opposed to lands associated later with China).

For centuries, Imperial China was also one of the world's most technologically advanced civilizations, and East Asia's dominant cultural influence, with an impact lasting to the present day. It is home to the Four Greatest Inventions of China — paper, the compass, gunpowder and printing — which eventually spread to the rest of the world.

By the nineteenth and early twentieth centuries, however, China's political, economic, and military influence declined relative to the growing regional power of Imperial Japan and the influence of Western powers. The imperial system in China ended with the establishment of the Republic of China (ROC) under Sun Yat-sen in 1912; however, the next four decades of ROC rule were marred by warlord control, the Second Sino-Japanese War during which the Empire of Japan occupied parts of China, and the Chinese Civil War which pitted Chinese Nationalists against the Communist forces.

After its victory in the Chinese Civil War, the Communist Party of China under Mao Zedong established the People's Republic of China (PRC) in 1949, forcing the Nationalists to retreat and relocate the ROC government to the island of Taiwan, which it had governed since the end of World War II. Since then, the ROC has maintained administrative control over Taiwan, the Pescadores Islands, several islands off the coast of Fujian province including Kinmen and the Matsu Islands, and some islands in the South China Sea.

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