During the American Revolutionary War, the Continental Congress asked Nova Scotia to join the 13 colonies and declare independence, but Nova Scotia refused. There were also a lot of colonists in Nova Scotia who wanted to join the 13 colonies.
Challenge: With a POD before 1867, Nova Scotia becomes part of the United States.
Why not think that If English Puritans came to Maritime Provinces like New England colonies & wars of three kingdoms(1639-1653) never happened then king Charles I would reign & huge English Puritans, Scottish Presbyterians & Irish Catholics migrated to American colonies. Due to the huge migration Puritans would have settled to the Maritime Provinces, naming that area as New England.