As a fairly totalitarian and isolationist country surrounded on most sides by geographical hindrances, China really didn't have many immigrants begging to get in.
china's early leaders limited contact with outsiders
Mountain ranges & deserts
The lesson is that the decline of a civilization is not simply the result of attack by outside invaders.
Canton
The history of civilization does not include everybody. No hunting or nomadic peoples could generate a civilization -- they lacked the stability and resources, and, with the exception of a limited numbers of signs and symbols, they never developed writing, unless it came from the outside.
china's early leaders limited contact with outsiders
Mountain ranges & deserts
Outside influences that affected the development of the Korean language include contact with China, which led to the borrowing of vocabulary and adoption of Chinese characters, as well as the influence of Buddhism, which introduced new religious and philosophical terms. The Japanese occupation of Korea in the early 20th century also impacted the language, as Korean was suppressed in favor of Japanese.
From outside
China worked to block outside influences. This allows them to preserve their culture without having to worry about outside influences.
because the Chinese emperer thought that he would rather spend the money used on trading and communicating with other countries and use it on frontline defence of china.
sleeping in tents outside
the restriction of a culture from outside influences.
the restriction of a culture from outside influences.
They all developed in areas around rivers, with some geographical protection from outside invaders.
It depends what the outside influence is.
philosophers