4. United States foreign policy changed following World War II as the United States A) returned to a policy of isolationism
B) became a leader in world affairs
C) pursued a policy of appeasement toward the Soviet Union
D) rejected membership in the United Nations

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.

the map that was shown mostly had eastern asia highlighted. the answer would mostly likely be "the spread of communism into eastern asia set the stage for the korean war."

hopefully this .