The development of the mayflower compact(first official document that mentions communal governing), the failure of Britain to maintain salutary neglect, the taxation without representation imposed on America by Britain, and Benjamin franklin who spoke of the unification of the New England colonies.
C.the revolution was an attempt to break free from the motherland and create a new nation.
Since Roman was expanding and it didn't have control of their lands and couldn't govern most of it. It kept expanding until the western part of Roman was conquered by Barbarians.