For an essay about the most influential Presidents in history, with an emphasis on how they have influenced one another and the world, the two best-fitting text structures would be:
B. Compare and Contrast: This structure would allow the essay to examine the similarities and differences between various presidents, showcasing how their policies, leadership styles, and legacies have influenced one another and shaped global affairs. By comparing figures such as Abraham Lincoln, Franklin D. Roosevelt, and Barack Obama, the essay could highlight how their decisions were sometimes guided by the actions of their predecessors and contemporaries.
D. Cause and Effect: This structure would enable the essay to explore the reasons (causes) behind the actions of certain presidents and the resulting impacts (effects) on the United States and the world. For instance, how George Washington's precedent of a two-term limit influenced future presidents, or how the New Deal introduced by FDR set a precedent for government intervention in the economy that would be referenced by later leaders.
Using these two structures, the essay can effectively analyze the interconnections between various presidencies and their broader implications.