Compare and contrast the presidencies of William McKinley, Theodore Roosevelt and William Howard Taft

I dont really have any instructions other than the information I have provided. This is for an undergraduate 200-level American History class. Please feel free to email me if you have any questions. The text we are using is :

Tindall, G. B. & Shi, D. E. (2007). America: a narrative history (7th ed.). New York, NY: W. W. Norton & Company, Inc.