Countries having the highest concentration of millionaires; Countries with highest income inequality

Here are two interesting postings at Business Insider:

At the first link - #15 is the United Kingdom, #7 is US of A

The 15 Countries With The Highest Concentration Of Millionaires

And then there's this -

when you look at this list, a few moments thought will tell you that inequality does not equal most impoverished ...

The Most Unequal Countries In The Developed World