I. Introduction
  A. Introduce Macbeth and as-Saffah
  B. Present the thesis statement

II. Body Paragraphs
  A. Similarities between Macbeth and as-Saffah
      1. Ambition for power
      2. Use of cunning tactics

  B. Differences between Macbeth and as-Saffah
      1. Background and upbringing
      2. Achievements and failures

  C. Effects of their actions on their respective societies
      1. Positive impacts
      2. Negative consequences

III. Conclusion
  A. Recap similarities and differences
  B. Reiterate the thesis statement
  C. Final thoughts on Macbeth and as-Saffah’s legacy