The Cleveland Massacre

John’s aggressive strategy during the rise of Standard Oil led to the acquisition of 22 out of 26 competitors, a move that would be infamously labeled the Cleveland massacre. While independent oilmen feared the influence of the South Improvement Company, John framed his actions as necessary for maintaining industry stability and profitability. By the end of the decade, he had secured control of over 90% of the nation’s oil production, ensuring that those who sold to him would never face financial hardship again.