> So which societies have adopted them and it lead to negatives?

I'll leave this as homework, find societies than have ended worse than they were without any external cause, you can group by democratic, aristocratic and dictatorial societies, examples are not scarce.

> I would like an example and also an explanation for why these things aren't solved problems in America then?

Because we don't know how to solve these issues. I'm not sure what you'd like an example of.

> That also does not mean the USA is working and working well for people, hence the millions of suicidal teens. It's possible that no system is working.

Agreed, my point this whole time is that what you call the solution other people call the cause.