Which of the following was a major outcome of the National Security Act of 1947?

The major outcome of the National Security Act of 1947 was the creation of a separate Air Force. This act was a pivotal piece of legislation that fundamentally reshaped the United States' military and intelligence organizations post-World War II. Prior to the passage of this act, the Air Force was a subordinate branch of the Army, specifically under the Army Air Forces.

By establishing the United States Air Force as an independent service branch, the National Security Act recognized the importance of air power in national defense and aimed to streamline military operations by allowing the Air Force to operate independently from the other branches. This change paved the way for a more cohesive and focused air strategy, reflecting the evolving nature of warfare and technological advancements in aviation.

The other responses, while significant in their own right, do not capture the primary outcomes of this pivotal 1947 legislation. The formation of the Pentagon and the integration of military branches are aspects of military organization but not directly outcomes of this act. Similarly, the act did not specifically elevate the Navy as the principal military force; instead, it aimed to balance roles among the Army, Navy, and newly formed Air Force. Thus, the establishment of a separate Air Force stands out as a clear and crucial impact of the National Security Act