A man named John started a big oil company. 

A man named John started a big oil company. 

John D. Rockefeller started Standard Oil in 1870. 


Standard Oil was a huge business in the oil industry. It existed from 1882 until 1911. 

The company grew by using many different ways to work.
In 1882, the leaders found a new way to organize.
Many important people and numbers shaped this history. John D. Rockefeller was the most important leader. By 1904, the group controlled 91% of oil refining in the U.S. 
Even though the big trust broke up, its pieces stayed strong. 

The Standard Oil Company was a massive corporate trust that dominated the petroleum industry. 

Standard Oil grew through a specific process of expansion and efficiency. Rockefeller often acquired competing firms to increase his market reach. 
To manage its massive size, the company used a unique organizational structure called a trust.
There were different stages in how the company was organized over time. In 1885, the company moved its headquarters to New York City. 
History shows that the company's power eventually led to legal challenges. In 1890, Congress passed the Sherman Antitrust Act. This law was designed to stop conspiracies that restrained trade. 
This legal decision had massive financial consequences. The court ordered the company to break up into thirty-nine separate companies. 
Today, the legacy of Standard Oil is still visible in the modern world. 
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