What leadership (except in economy size and military)?
Other nations have been more developed in internet, infrastructure, healthcare, education, work culture, etc for decades.
Heck, parts of NY were like a developing world city back then, much less places in the South and co...
Are the other nations which are ahead in US in these areas which I am missing?
I think you should travel more. Maybe try Switzerland or the nordic region?
In internet speeds for example, the US just made it in the top 10 this year: https://www.fastmetrics.com/internet-connection-speed-by-cou...
And if you visit a place like Switzerland you'll wonder what kind of developing world nightmare is the US compared to their efficiency, cleanliness, infrastructure, government services, and lots of other things besides.
It's also a few places ahead of the US in per capita GDP. But then again, several countries are: https://www.cia.gov/library/publications/the-world-factbook/...
Not also how Sweden, Norway, Switcherland and Denmark have higher per capita median income than the US (adjusted for purchasing parity etc): https://en.wikipedia.org/wiki/Median_income
(Apart from access to healthcare, UK is less developed in those areas than lots of countries)
> The time to schedule an appointment has jumped 30% in 15 U.S. metropolitan areas from 18.5 days in 2014 amid a national doctor shortage fueled by aging baby boomers, population growth and millions of Americans with health insurance.
It's easy to shorten wait times for healthcare by removing/keeping millions of people from having coverage.