Which of the following describes a major difference between the Vietnam war and earlier wars in American history?

Stop the spread of Communism.

Explanation:

According to the United States political leadership, the war in Vietnam aimed at stopping the spread of communist ideas. In this context, extensive military action has been launched to achieve its goal. The northern part of Vietnam proclaimed the concepts of Communism. The United States Government considered Communism a threat to the democratic order.

s the president shall be commander in chief of the army and navy of the united states, and of the militia of the several states, when called into the actual service of the united states; he may require the opinion, in writing, of the principal officer in each of the executive departments. sooo yeahhh

explanation:

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.