China, officially People’s Republic of China, country of East Asia. It is the largest of all Asian countries and has the largest population of any country in the world. Occupying nearly the entire East Asian landmass, it occupies approximately one-fourteenth of the land area of Earth. Among the major countries of the world, China is surpassed in area by only Russia and Canada, and it is almost as large as the whole of Europe.
Within China’s boundaries exists a highly diverse and complex country. Its topography encompasses the highest and one of the lowest places on Earth, and its relief varies from nearly impenetrable mountainous terrain to vast coastal lowlands. Its climate ranges from extremely dry, desertlike conditions in the northwest to tropical monsoon in the southeast, and China has the greatest contrast in temperature between its northern and southern borders of any country in the world.
Probably the single most identifiable characteristic of China to the people of the rest of the world is the size of its population. Some one-fifth of humanity is of Chinese nationality. The great majority of the population is Chinese (Han), and thus China is often characterized as an ethnically homogeneous country, but few countries have as wide a variety of indigenous peoples as does China. Even among the Han there are cultural and linguistic differences between regions; for example, the only point of linguistic commonality between two individuals from different parts of China may be the written Chinese language. Because China’s population is so enormous, the population density of the country is also often thought to be uniformly high, but vast areas of China are either uninhabited or sparsely populated.
With more than 4,000 years of recorded history, China is one of the few existing countries that also flourished economically and culturally in the earliest stages of world civilization.