In river valley civilizations, permanent settlements were stable, but were more vulnerable to attack to natural disasters, which ruined crops. This created a need for
1) skilled hunters and gatherers
2) warriors to specialize in defense, and religion to intercede with natural spirits
4 answers
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What is your question here?
It's a multiple choice question and I cannot choose between choice 1 or choice 2.
It would be difficult for skilled hunters and gatherers to supply all the food a permanent settlement would need.