i think what set america's greatness apart from the world is that fact that we have a unique set of laws framed in the u.s constitution and codified in the bill of rights!
some people will argue her white heritage wish is true but there are other white countries that dont have protections for their citizens from their govt.
others might argue that our greatness stems from the fact that the first settlers were religious christian people,wish is also true since most were fleeing persecution from Europe
and yet,there are others that point out that our greatness comes from a long term plan conceived in the Elizabethan monarchy of England as far back as middle ages where secret societies conspired together in order to create or rather recreate the Atlantis of legends.it is said that queen Elizabeth of England conspired with Francis bacon (which btw some people think he was the real Shakespeare) to make this long time occult desire a reality in the new world and that the new continent was going to be the place for this "magnus opus"
its pretty interesting that some of founders were freemasons and rosicrucians of the highest order that held esoteric views about what america would be.thus,they created her as a republic to mimic as much as possible the plato's republic and the atlantean mythology of yore
so,yes it seems that america is a curious mixture of all these things....what do you think voat?
[Secret Mysteries of America's Beginnings - Vol 1 - The New Atlantis (https://www.youtube.com/watch?v=tuoEvFuJDuU)