How did the containment policy draw the u. s. into the vietnam war

They wanted to stop communism

Explanation:

The truman administration adopted by 1947 a foreign policy (containment policy) in which influence expansion for communist countries must be prevented to force the fallout of the communist system, in this order of ideas vietman was under a communist regime whcih eventually led to the entrance of the US into war

mass production/ assembly line production

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.