Carroll, Reed, and Lazear assist in Cuba's progress as a nation by finding the treatment of the country's epidemic: the Yellow Fever, through a series of experiments in the <span>U.S. Army Hospital, Havana Cuba in 1900.
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Answer:d
Explanation:industrilization and the growth of factories created jobs and growth to the cities
Its either B or C. but if I'm not mistaken its c
D) Opponent for the 1864 Presidential election