Simplify the following text for a Grade 12 native English-speaking person.
Original: Most settlers in the American Mid-Atlantic and New England were Calvinists , including the English Puritans , the French Huguenot and Dutch settlers of New Amsterdam ( New York ) , and the Scotch-Irish Presbyterians of the Appalachian back country .
Simplified: Most settlers in the American Mid-Atlantic and New England were Calvinists , including the Puritans and Dutch settlers of New Amsterdam ( New York ) .