[twigs]

I don't understand why James Monroe isn't on the list. The Monroe Doctrine is critical to understanding American foreign policy. The first five presidents should all have been the top of the list, leading with George Washington. Abraham Lincoln deserves to be on the list, but not as #1.

[Lucius Cornelius Sulla]

I don't understand why James Monroe isn't on the list.

Because they knew John Quincy Adams was responsible for this doctrine, and they put HIM on the list.