A research revealed in Brazil that income disparities are related to illiteracy rate while illiteracy rate is related to life expectancy.
In relation with Lilvania, it also has the same outcome. Income is related to GDP, it means that income disparities with people have an impact on GDP which resulted in other problems like illiteracy rate and life expectancy.
Raising the income would have a positive effect on declining illiteracy rate and life expectancy (having a well-planned family).