I started to write up a list of what the US is best with or has the best of, and contrast that with a list of what other nations are the best with and have the best of -- but decided that "best" is often EXTREMELY subjective.

Let's all admit that most claims of "best" this and that are more feel-good rah-rah cheerleading rather than objective fact - especially if you have to consider a huge smorgasboard of factors.