During the Korean War, which country provided military support to oppose the side supported by the United States?

A. Great Britain
B. the Soviet Union
C. Vietnam
D. China

D. China

What is the main reason Mao Zedong was able to make China communist?

A. The landlords supported him because he demanded obedience.
B. The business owners supported him because he wanted to industrialize China.
C. The peasants supported him because he promised them land.
D. The warlords supported him because he promised them tax revenues.

C. The peasants supported him because he promised them land.

During the Korean War, the country that provided military support to oppose the side supported by the United States was D. China.

To find the correct answer, you can look up historical information about the Korean War. Here is a step-by-step process you can follow:

1. Start by understanding the context of the Korean War. The Korean War took place from 1950 to 1953, and it began when North Korea, supported by the Soviet Union and China, invaded South Korea.

2. Research the countries involved in the Korean War. The United States, along with a coalition of United Nations forces, supported South Korea in repelling the North Korean invasion. On the other side, the Soviet Union and China supported North Korea.

3. Consider the options provided in the question. Great Britain and Vietnam were not major players on either side of the conflict, so they can be ruled out as potential answers.

4. Focus on the remaining options. In the context of the Korean War, the Soviet Union and China were both major supporters of North Korea. However, the question specifically asks for the country that provided military support against the side supported by the United States. The Soviet Union did provide some military support to North Korea, but China was much more heavily involved and provided significant military aid to the North Korean forces.

Based on this information, the correct answer is D. China.