The main source of conflict was Parliament's insistence on closely regulating American commerce after the French and Indian War in 1763. ... British officials in the colonies saw how American merchants ignored taxes and the Navigation Acts, and they vowed that the Americans would have to pay their fair share.
The causes of the sources of discord in early New England is the religious conflicts that started up because of the strict puritans. They handled it pretty well by establishing a more religious free Rhode Island as well as Connecticut.
