Superpower is a power that has no rivals, which can wield its influence at will, which can impose its own policies, its own agenda, it can go wherever it wants to go, and not worry about the consequences. United States is that superpower... or at least it used to be. The United States emerged from the cinders of World War II with its industrial base still intact and the only country with the atomic bomb.
It was without question the most powerful nation on Earth. What was done with this unprecedented power, and the effects it had on the republic and the rest of the world is the story of this documentary.
President Truman said, "The only thing new in the world is the history you don't know." Why is United States the only remaining superpower? Immediately after WWII the United States began influencing and intervening in foreign governments to an extent and manner unparalleled in history. The National Security Act of 1947 fundamentally changed and reorganized the United States military establishments.
It created the National Security Council, and has since been used as the pretext for the extra-constitutional powers in the name of national security. In the time of fear during the Cold War the National Security Act also created the CIA as an Intelligence Gathering Agency but almost immediately the CIA expanded into a Clandestine Operations Agency.
Interventions abroad built up the US political, economic and military strength by seeking control over world resources and access to raw materials, markets and labor power in third world countries. Interventions in foreign governments became common practice. Claimed to be for reasons of national security these interventions were often solely for the benefit of multinational corporations.
Eisenhauer's 1961 farewell address warned Americans to safeguard their liberties but apparently that speech didn't have any significant effect on the American people... except it's quoted in almost every documentary.