The document discusses the reasons for US involvement in Korea and Vietnam in terms of containing the spread of communism. It explains that containment meant stopping the expansion of communist governments and ideologies. The US believed the Domino Theory, that if one country became communist then neighboring countries would follow. While communism had already spread to Russia and China, the US was concerned that newly independent Asian nations might also become communist without American intervention. In Korea, the US fought to prevent North Korea from conquering South Korea and spreading communism. Containment was achieved in Korea. However, in Vietnam the US failed to contain communism as North Vietnam ultimately reunited the country under communist rule after the US withdrew.

1. SS7H3(e): Explain the reasons for foreign involvement in Korea and Vietnam in terms of containment of communism .