Will you explain what common reason why some other country is still experiencing poverty and some person dying because of hunger because of efficiency on food?
un-equal distribution of wealth in the society is the main reason.
There is a solid reason for the unequal distribution of wealth. You can expect a person who is having just primary education and an IQ level of 60 to have the same level of income as someone with a Master's degree and an IQ level of 120. It also depends on how hard working that person is, and how much he is keen on learning new skills.