Answer:
It is a.
Explanation:
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Henry ford developed and popularized the use of a conveyor system. Another thing which has impacted me is that there are several cars produced from his original model t and he was the first mass producer of a pickup truck.<span />
Answer:
Congress's commerce authority includes the power to regulate those activities having a substantial relation to interstate commerce (activities that substantially affect interstate commerce).
Explanation:
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The answer would be 2,3 and 4
