Answer:
The two natural factors are.
Rainfall and river
The two man made factors are
Canal and tube wells
<span>There were probably several, but it is a deadly sickness if not treated and the outbreak in the middle ages killed 1/3 of Europe. Some cures were weird things like eating crushed emeralds or drinking poison. Some symptoms included swollen lymph nodes and bleeding out in many places </span>
Sahara is the answer! hope this helps! :)
Answer:
llithosphere hydrosphere stratosphere
