What type of government were Americans trying to stop in Southeast Asia?

A communist government

Explanation:

The domino theory was a Cold War policy that suggested a communist government in one nation would quickly lead to communist takeovers in neighboring states, each falling like a perfectly aligned row of dominos.

The domino theory was a Cold War policy that suggested a communist government in one nation would quickly lead to communist takeovers in neighboring states, each falling like a perfectly aligned row of dominos.

Explanation:

i believe the answer is c

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;