The United States took action against communism in several different parts of the world. Describe the part played by China in the Korean War.

One mark for each relevant point.
Responses may include the following:
- China supported North Korea.
- Mao threatened to intervene if US forces advanced into North Korea.
- In October 1950, 200000 troops entered North Korea to face US forces advancing through North Korea.
- Chinese forces halted the US advance.
- Chinese forces took Seoul.
- The front line with China then stabilised at the 38th parallel.
- China agreed to an armistice in 1953.