It's A
Irrigation was overused, the soil didn't get any rest (crop rotation is a younger invention), the result was salinization of the soil, which led to decline of Sumer.
I think that they will have a more futuristic touch and if you have seen the movie After Earth something like that
<span>Sharing a small living space with family
members. During the industrial revolution, people from the countryside came to
cities in multitudes looking for greener pastures by obtaining jobs in
factories. For this reason, the family members had to live together in small
spaces.</span>
Explanation:
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