What was the name given to the idea that if vietnam fell to communism, the rest of southeast asia would become communist?
a. the roll back theory
b. the steamroller theory
c. the communist theory
d. the domino theory

if your doing connexus the answer is domino theory

Explanation:

the answer would be option c. the chief result of u.s. participation in world war i is that, the u.s. forces ended the stalemate and led to an allied victory. after the us joined wwi, the allies had the forces they need to triumph. hope this is the answer that you are looking for.

explanation:

mark brainliest and have a great day!