Sorry to say I can't agree here. Perhaps 30/40 years ago it was, but to my mind the US has been distracted, as have many other developed countries, with pursuing wealth and power for a few, rather than the betterment of humanity. For advancement, I'd look to the real innovators like the far east, and India where new reliable tech is being manufactured at a phenomenal rate and there is an active space programme. To describe a nation as advanced, I would look for greater equality of wealth (fail), safety (fail - gun crime), fair affordable medical provision (fail) - not just how wealthy a few corporate elite are, as a measure.