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Europe has 51 independent states, each with unique legal/political/social system, each has multiple languages, religions and regional cultures. Just as a starter ,and it is far from describe the whole spectrum.
In China there is only one central political / authority for thousands of years - it is not an accident to see Europe as the area where all current legal/social/corporate structure has been created thought multiple trial/error across the continent over thousand years.
LOL, like I said, no understanding of Chinese culture.
Marjor religions in Europe are Christianity, Judaism, and Islam. All of which share the same root of Abrahamic religions.
Major religions in China are Buddhism, Taoism, Islam, and Christianity. Buddhism is from India, Taoism is Chinese, and Islam and Christianity are Abrahamic.
European languages fall into a few major groups: Romance, Germanic, and Slavic. Within those groups, the differences between various languages are comparable to different Chinese dialects.
In China, Mandarin is the official language, but every region has its own dialect. Some are mutually intelligible with Mandarin, others sound completely alien. In addition to the Han dialects, each of the 55 minority nationalities have their own distinct language. Most prominently, we have Mongolian, Tibetan, Uighur, and Korean. (Prominent as in gets most media exposure, not necessarily spoken by the most people).
Politically, China has everything from direct democracy in villages, representative democracy in the National People's Congress, to full meritocracy in the Communist Party.
Current European prominence in social and legal structure has only existed for two hundred years. Before that, Europe was mired in a Dark Age for more than a thousand years. Meanwhile, Chinese civilization has existed for more than 5000 years. When we were building the Great Wall, most of Europe was populated by barbarian tribes.