How did the domino theory influence the United States' role in the Vietnam War?( Vietnamization became the new U.S. foreign policy. Vietnamization became the new U.S. foreign policy. The United States adopted a position of neutrality. The United States adopted a position of neutrality. It forced the United States to support the Vietcong. It forced the United States to support the Vietcong. It convinced the government to become involved in the war.
The domino theory influenced the United States' role in the Vietnam War by convincing the government to become involved in the war. The domino theory suggested that if one country fell to communism, neighboring countries would also follow suit, creating a "domino effect." The United States feared that if South Vietnam were to fall under communist control, other countries in Southeast Asia would also become communist, jeopardizing U.S. interests in the region. This fear of the domino effect prompted the United States to support the South Vietnamese government and ultimately deploy troops, in an attempt to prevent the spread of communism.
