<span>The accuracy of Ida Tarbell’s research about John D. Rockefeller is very important because It was essential for her credibility as a journalist.
Ida Tarbell's mode of researching about John D. Rockefeller and the Standard Oil company includes: </span>1) interviewing dozens of Standard Oil employees. 2) visiting Standard Oil headquarters in meetings with a representative of Standard Oil, Henry Rogers <span>3) visiting Rockefeller’s Baptist church where he continued to serve. </span><span>4) scrutinizing 300 testimonies, each approaching 1,000 pages of text as part of her research. </span> Her thorough research lent her the credibility to write her series about John Rockefeller, the start of the oil industry, and how it became a monopoly.
It lasted 116 years and saw many major battles – from the battle of Crécy in 1346 to the battle of Agincourt in 1415, which was a major English victory over the French.
