Pyramid
You know, in some Natural Disasters, poor people who are the main ones to suffer first. Because they are poor, when earthquake comes, the people who lived in the bad houses got crashed by the houses first. When flood comes, the people who lived in the poor area suffered the flood first. When diseases happen, the poor people would have no money and no medical care.
when Natural Disasters happen, poor people would get flushed away by the disease because they are in the bottom of the area. And the diseases always could not reach the layer who stayed in Pyramid.

