What are some poor places in the baddest poverty?

Me and my friend want to go and live somewhere in poverty (for a year) to help people living there when we finish school. Anybody know the worst off places in poverty. We really really wanna help them because we saw a video about it the other day. It made us cry. The gran walked 9 hours to a hospital, went outside, came back in 2 minutes later and the little boy had died. He was 1.