In the 1970s there was an oil shortage that convinced law markers to reduce speed limits in order to reduce gas usage. During that time, the number highway deaths also decreased. Did the reduction in speed limits cause the number of deaths to decrease?

Presumably yes, because with higher speeds there is less control when driving leading to an increase in wrecks.

Explanation:

the enslaved people onboard suffered from illness with some frequency

several states had passed similar laws, but they were limited to intrastate businesses. the sherman antitrust act was based on the constitutional power of congress to regulate interstate commerce.

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