How did the domino theory influence the United States' role in the Vietnam War?

A)
Vietnamization became the new U. S. foreign policy.

B)
The United States adopted a position of neutrality.

C)
It forced the United States to support the Vietcong.

D)
It convinced the government to become involved in the war.
E

The correct answer among the choices provided is option D. Domino Theory convinced the government to become involved in the war.

Explanation:

D)It convinced the government to become involved in the war.

Explanation:

answer; i believe that the correct answer is (tobacco);

small european communities with shared traditions consolidated into large new states (apex)