How did the Cleveland massacre impact standard oil I 1872

he Cleveland Massacre refers to a three month period in 1872 when Standard Oil Company acquired virtually all its competing oil refineries in Cleveland, Ohio. During a six week span in February and March of 1872 Standard Oil acquired 22 of 26 rival refineries at highly discounted rates.

Explanation:

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.