Has income inequality ever been solved in societies in the past in terms of what people make to cost of living? One thing I've seen many on here whether life style is increasing or poor's wealth is, income inequality in terms of things like food, water, healthcare keep going up, but wages aren't keeping up.  This includes education sadly since if someone can't afford schooling, they can't escape poverty likely?

Have countries in the past ever faced these issues and solved them?  Is it possible for places like America these days?
America has faced staggering income inequality during the Great Depression.


http://thinkprogress.org/economy/2014/03/31/3420998/wealth-inequality/

In 1933 unemployment was 25%. President FDR's "New Deal" policies of fiscal stimulus, massive government spending on infrastructure, increased financial regulation and the creation of a social safety net (welfare, unemployment, pension) helped millions of people out of poverty and minimized the wealth gap. 

Whether such a "New Deal" is politically feasible in today's America is debatable. We have to wait until November 3 to see who wins the election.