The United States and the Soviet Union used the concept of rocket propulsion in combination with nuclear weapons during the Cold War. Which country had originally used rocket propulsion to its advantage during World War II?

d: social contract theory

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 answer i chose to believe is 'harmony'