The king of Scotland had died without a son, and the king of England, a cruel pagan known as Edward the Longshanks, claimed the throne of Scotland for himself.
Medieval America is a religiously diverse place, perhaps the most diverse for a pre-Industrial society since the classical era. This is generally convenient for warmongers, as their strange rites and foreign tongues make for good propaganda to justify taking up arms. Even for places ostensibly share the same faith, the range in topography and centuries of legends and well, the urge to pick a fight have people even considering their neighbors rather queer. Each region has its quirks that its enemies spread stories over.
New England, has seen the exact details of the Salem Witch trials lost to time, and as far as many are concerned, the region is the gateway to Hell. For their part, New Englanders see themselves as the capital of both reason and piety, and everyone else is just falling behind.
The Mid-Atlantic is seen by many as an empire brought low by decadence and sin, who's more eserotic elements are merely keeping a relatively low profile. For their part, the people of the Tri-State see their people are the most civilized on the continent.
The Midwest is seen by many as a bizarre place where the oceans have no salt all things converge. For their part the Midwesterners consider themselves the most American of Americans, and the true heirs the nation.
The Cowboys of the plains are seen by many as brutes commanded by Shamans, who might as well be part beast. For their part, the herdsmen see themselves as the only men who are truly men, and their faith as one which has shed all pagan trappings.
The Mormons are seen as as a mysterious, insect-like sect. For their part, Mormons see themselves as cleaner and more efficient than anyone.
The New Agers are considered by many to be outright wizards with staves and everything. For their part, the New Agers think they're the only ones not doing magic.
The Californians are seen as the most opulent and mysterious of all the cults. For their part, Californians are the only enlightened one, and that everyone else is possessed by Thetans.
The Cascadians are seen as hallucinating Hippies are barely even American. For their part, they totally consider everyone else ogres.
The denizens of the Secretarial states are seen as a group of reptile-worshippers part of a matriarchal coven. For their part, the Louisianans say "Do we do magic? Maybe? I guess? Who cares?"