For distributions, it would make more sense to create histograms instead of bar charts.

It seems that patterns are different in these three countries, which is interesting. An improvement might be to add a smoothing line to show the trends - which help communication better!

This visualization basically conveys same idea as the first one. And I think instead of making line charts, a statistical smooth line might be better. In this visualization, you can consider to show a different relationship between variables.