Final answer:
The significance and impact of the breakup of the Standard Oil trust in the US history.
Explanation:
The breakup of the Standard Oil trust was a significant event that took place in the late 1800s and early 1900s in the United States.
It was led by a series of investigative works, notably Ida Tarbell's exposé on the monopolistic practices of Standard Oil Company, which played a pivotal role in its dissolution through legal actions.
The breakup of the trust was a landmark antitrust case that led to the dismantling of Standard Oil's monopoly over the oil industry.
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