Why might a widening gap between the richest and poorest citizens of a country be a cause for concern about that country's future?

In advanced economies, the gap between the rich and poor is at its highest level in decades. it'll  creates a higher demand for skilled workers, placing a premium on those with a college degree. Those who lack the skills and education are more likely to find themselves feeling left behind and unable to gain access to or compete for jobs.

Explanation: