What are the differences in ethnic composition among China, Japan and the United States? What influence does the ethnic composition have on the country?

China is a multi-ethnic country with the Han nationality as the main body. The main ethnic group is the Han nationality, the main culture is the Han culture, and the other ethnic groups are all ethnic minorities, with a population far less than that of the Han nationality.

Japan is a mono-ethnic country composed of Yamato ethnic groups, and there are no ethnic minorities.

The United States is an immigrant country composed of many countries and nationalities. There are many ethnic groups in the United States, and there is no absolute majority like the Han nationality in China.

The composition of ethnic groups will affect the culture of a country, and each ethnic group has its own traditions and culture. China is dominated by Han people, so it is dominated by Han culture, but it constantly absorbs and integrates the cultures of ethnic minorities, forming a complementary situation.

Japan is a single Yamato nation with the strongest national cohesion and the easiest to form a sense of national superiority.

The United States is a multi-ethnic country with no absolute majority of ethnic groups, which makes the United States best able to integrate and accommodate the ideas of various ethnic groups and better integrate and blend. However, because there is no dominant nationality and culture, conflicts between various ethnic groups and cultural groups often occur.