Pre-history
Before Ida's book exposed the furtive and stealthy actions made by The Standard Oil, The Standard Oil were underselling money of competitors until they went of out business. It bought up components needed to make oil barrels to prevent competitors from getting oil to their customers. The Standard Oil also negotiated with the people in charge of railroads, which gave them secret rebates, helping it to get reduced shipping cost(The Dismantling...). The Standard Oil Monopoly consisted of railroads, schools, buildings, oil, meat-packing business, and etc.
Outcome
The Standard Oil Company was divided up into 37 new companies(Rome). The Standard Oil Monopoly was also divided among the different original companies(Standard). After everything was dismantled though, Rockefeller still had control of the little individualized companies through stocks. However, innovations were not stifled since the monopoly were put to a stop. Competition of businesses went back up and technological advances were starting to be made again(The Dismantling...).
Concurrent
Two other turning points relative to The Standard Oil were occurring concurrently with the exposure of the Standard Oil Company by Tarbell's book. The first was the Industrial Revolution, which was a time of mass production and labor. Unhealthy labor work such as the meat packing business was forced onto the middle and lower class. The second was The Great Depression of the 1930's, which was a time when many middle and lower class struggled to even feed themselves. This was also the time period when John D. Rockefeller decided to take advantage of the depression as well as the Stock Market Crash of 1929.