alliances
The US built it, but was not quite a superpower at the time. The US and USSR became superpowers a few years after the war.
The US turned into a superpower
The US grew greatly in global influence in the 19th century and became a superpower in the 20th century. The US is still a superpower in the 21st century.
After the Cold War, the United States emerged as the world's leading superpower. Even as a superpower, the US cannot enforce all of its policies on the rest of the countries in the world.
US and USSR
Make love, not war. Is the USA really a superpower? It should have twice of its current military power to be considered a superpower, taking on account that......
It was the end of two superpowers, leaving the US as the sole superpower of the world It was the end of two superpowers, leaving the US as the sole superpower of the world
UNIPOLARITYunipolarityunitochracy
In the World War 2 period there was no one power that could be called "the World Superpower" so the US did not defeat it. At present some call the US "the World Superpower." Whether that is a valid description or not is a matter of opinion, but even if true it is still not possible for the US to defeat itself so the US has never defeated "the World Superpower."
unitochracy
You mean long term contributed factors of Americas becoming a superpower. Google military-industrial complex. but also as an American its pretty obvious that simply freedom has made us a superpower.
No, Vietnam is not a superpower.