nomads are people who moved from one place to another depending on the weather, food, etc. bipedal are animals who are able to walk with 2 legs. hunters and gatherers preceeded nomads and decided to settle in one place instead of moving around periodically. tool makers makes tool I guess.
Plessy vs Ferguson is the one I think. Research it on wiki to confirm.
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Answer:
the answer to this question is option c:-)
