Imagine for a moment about a timeline where the British won the American Revolutionary War as a result of the French withholding critical aid to the American rebels. The Founding Fathers are either executed for treason or in hiding. But, despite this victory, there is still tension between the free-minded colonists and their faraway monarchs in England.
It is the 19th Century. The British decide to outlaw slavery throughout their Empire. Would the colonists see this attempt to control the American colonies as another excuse to fight the British in a second attempt at Revolution, as they did with taxation and the Stamp Acts?