Recurrent epidemics and widespread diarrhea, which kill millions of children each year, are often the result of

Dysentery, usually due to a bacterial infection, like e.coli.  a virus, like  the noro-virus  or a single cell organism like giardia.  its poor sanitation as well as poor hygiene

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.