If I was inclined to parrot the "America is the greatest country ever" viewpoint, I would point to the moon landings as the greatest thing we ever did. And it was done by a large collection of smart, well-educated people doing science and mathematics - not by a bunch of hillbillies whose greatest accomplishment in life was figuring out how to mount a big flag on the back of their pickup truck. Even the dudes who rode those rockets to the moon were well-educated in science and mathematics in addition to being brave as fuck. It's ironic that the "America is the greatest" crowd are also generally anti-science.

The other greatest thing we ever did was defeating fascism in WWII. Ironically enough, this was achieved with literally a command economy, not via "free enterprise". Also ironic that the "America is the greatest" crowd now loves fascism. I guess defeating the CSA in the Civil War and ending slavery (sort of) was also a great thing - and once again the irony there is obvious. It's ironies all the way down (including captured Nazi rocket technology essentially forming the basis of the moon landings).