Which of the following lead to the break up of the standard oil trust
![Which of the following lead to the break up of the standard oil trust class=](https://us-static.z-dn.net/files/dce/263c854aa551fecaef06e6947a91026e.png)
The answer is a A book by a muckraking jounalist. By the way that jounalist was names Ida Tarbell. Rockefeller had to give up the standard oil company and turned into Philanthropy. (the study of humans)