"To accommodate for lack of dependable rainfall" would be the best option as to why the ancient Chinese organized large groups of people to build and maintain irrigation systems, since when rainfall would not come for long periods of time, the crops would likely die without proper irrigation.
Because Francis was assassinated by a serbian, Austria-Hungary declared war on Serbia, which triggered the domino effect of the central powers declaring war on everyone. Causing World War 1.
He caused ww1
“Cottonwood” would be correct!! :D hope this helped!!
Answer: c, <em>harsh weather condition.
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PS. </em><em>IM NOT CHEATING, IT JUST LOOKS LIKE IT. </em>
