It was a grand total of 10 presidents almost assassinated.
The most likely theme to be found in a medieval ballad would be A - the battle of good versus evil. Medieval ballads often focused on struggles where the good would have to defeat the evil; angels defeating satan; a good and charming prince defeating an evil and usurping force, etc.
One of the main reasons why New England merchants became leading members of society is because they were able to accumulate large amounts of wealth, due to the fact that trade was quite profitable during this time.
The Mississipe culture adopted the Mexican central ceremonial plaza building style