Answer:
C)Early people learned to produce their own food.
Filial, because you need loyalty to be trusted, you need God to guide you and you can make the choice to be independent but, independent or not does nto matter.
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Need more context. They imposed it because they think they are the superior untainted race. They believed they were the strongest smartest fastest humans and other races were inferior.
Number 12 is C and D
Number 13 is Vietnam
Number 15 is Korea
Number 16 is the fall of the Berlin wall
Number 17 is D