Note: Uh--warnings for the Salem Witch Trials and child death, I guess?
________________________________________________________________________________
During the Salem Witch Trials of 1692, America was hung as a witch.
It was not a good time to be a slowly-aging immortal being, and once someone noticed America, things escalated from there.
Being a nation, he revived in a shallow grave managed to escape, but it resulted in him not believing in magic and being unable to see England's magical friends.
Nor do I think the other nations really know much about it--England was gone for long stretches of time, and England didn't get custody of Canada until 1763. Given how traumatic it would be for child!America, I can see him not wanting to talk about it.
(They did indeed throw executed "witches" into shallow graves. Europe also had witch trials, though the European nations would probably have been a bit older than America would have been, and thus been better at avoiding detection.)
