Which country saw the successful establishment of communism under the leadership of Mao Zedong

China
North Korea
South Korea
Vietnam

China saw the successful establishment of communism under the leadership of Mao Zedong.

The country that saw the successful establishment of communism under the leadership of Mao Zedong is China.

To arrive at this answer, you can utilize several methods.

1. Historical Knowledge: If you have a general understanding of history, you would know that Mao Zedong was the leader of the Communist Party of China and played a pivotal role in the establishment of communism in China.

2. Fact Checking: You can verify this information by referring to reliable sources such as history books, encyclopedias, or credible online platforms that provide information on political leaders and ideologies in different countries.

3. Search Engine Query: Conducting a search on a search engine with specific keywords such as "communism," "Mao Zedong," and "countries" can yield results that confirm China's successful establishment of communism under Mao Zedong's leadership.

Remember, it's important to cross-reference information from multiple reliable sources to ensure accuracy and avoid relying solely on a single source.

The country that saw the successful establishment of communism under the leadership of Mao Zedong is China.