Which countries in East Asia have a large majority ethnic group and which countries have a significant minority ethnic group?

To determine which countries in East Asia have a large majority ethnic group and which countries have a significant minority ethnic group, we can refer to reliable sources such as academic research, statistical data, and governmental publications.

1. Majority Ethnic Group:
The following countries in East Asia have a large majority ethnic group:

- China: The majority ethnic group in China is the Han Chinese, constituting around 92% of the population.
- Japan: The majority ethnic group in Japan is the Yamato people, who make up about 98.1% of the population.
- South Korea: The ethnic majority in South Korea are the Korean people, making up approximately 96% of the population.
- North Korea: Similarly to South Korea, the ethnic majority in North Korea is also the Korean people.

2. Significant Minority Ethnic Group:
The following countries in East Asia have significant minority ethnic groups:

- China: Although the Han Chinese are the majority ethnic group in China, there are various minority ethnic groups throughout the country. Some prominent ones include the Zhuang, Hui, Uyghur, Tibetan, Miao, Yi, and Mongolian ethnic groups.
- Japan: While the Yamato people are the majority ethnic group in Japan, there are smaller minority groups such as the Ainu, Ryukyuan, and Korean residents.
- South Korea: South Korea has a small minority population, including Chinese immigrants, foreigners of Korean descent, and foreign workers.
- North Korea: Similar to South Korea, North Korea has a relatively small minority population, primarily consisting of Chinese and Japanese residents.

It's important to note that ethnic composition can change over time due to various factors such as migration, historical events, and natural population growth. Therefore, it's always advisable to consult up-to-date sources for the latest population statistics and ethnic demographic information.

In East Asia, several countries have a large majority ethnic group, while others have significant minority ethnic groups. Here is a breakdown:

1. China:
- Majority Ethnic Group: Han Chinese (making up approximately 90% of the population)
- Significant Minority Ethnic Groups: There are 55 recognized ethnic minority groups in China, including Zhuang, Hui, Manchu, Uyghur, Miao, Yi, Tujia, Tibetan, and Kazakh.

2. Japan:
- Majority Ethnic Group: Japanese (making up approximately 98.5% of the population)
- Significant Minority Ethnic Groups: There are small populations of Koreans, Chinese, Ainu (an indigenous group), and other ethnic minorities.

3. South Korea:
- Majority Ethnic Group: Korean (making up approximately 96% of the population)
- Significant Minority Ethnic Groups: There are small populations of Chinese, Vietnamese, Filipinos, and other ethnic minorities.

4. North Korea:
- Majority Ethnic Group: Korean (making up approximately 100% of the population)

5. Taiwan:
- Majority Ethnic Group: Han Chinese (making up approximately 95% of the population)
- Significant Minority Ethnic Groups: There are indigenous ethnic groups such as the Amis, Atayal, Paiwan, Bunun, and others.

6. Mongolia:
- Majority Ethnic Group: Mongol (making up approximately 95% of the population)

It's important to note that these percentages are approximate and can vary depending on different sources. Additionally, East Asia is a diverse region with various ethnicities and cultures residing in each country.