Question

What events the U.S. get involved with because of the containment policy

Answer 1

The containment policy is what led to America’s involvement in Vietnam

Answer 2

Containment is a geopolitical strategic foreign policy pursued by the United States. It is loosely related to the term cordon sanitaire which was later used to describe the geopolitical containment of the Soviet Union in the 1940s. The strategy of "containment" is best known as a Cold War foreign policy of the United States and its allies to prevent the spread of communism after the end of World War II.