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:

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.