Discover a wealth of information and get your questions answered on IDNLearn.com. Get comprehensive and trustworthy answers to all your questions from our knowledgeable community members.

Why was the Cleveland Massacre significant in the formation of Standard Oil?

A. Standard Oil significantly improved its business practices after the Cleveland Massacre.

B. Standard Oil was bought out by other Cleveland companies after the Massacre.

C. Standard Oil closed down after the Cleveland Massacre.

D. Standard Oil became a monopoly in the Cleveland oil market after the Massacre.