6. the idea that if vietnam fell to the communists, the other nations of southeast
asia would also fall was called: a. the gulf of tonkin resolution. b. the domino
theory. c. vietnamization, d. the tet offensive

B. the domino theory

Explanation:

The domino theory does not only involve Vietnam and other nations of Southeast Asia. It was made to explain how if any country falls under communism then many countries around them would follow since they would see that they can revolt against their oppressors and be successful. That was one of the reasons why the United States went to war with Vietnam.

your answer will be b. improving roads, bridges, and other infrastructure. hope i !

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.