Historians should use more than one source because, if they do it will make there knowledge more creditable
In France the revolutionary events ended the July Monarchy (1830–1848) and led to the creation of the French Second Republic. Following the overthrow of King Louis Philippe in February 1848, the elected government of the Second Republic ruled France. ... Louis Napoléon went on to become the de facto last French monarch.
The correct answer is d. combustibility
Taxation without representation, the colonists were taxed by the British without the Colonists own government being consulted. Another reason was the that the British did not allow the Colonists to move into the newly aquired area of the northwest region(Ohio, Kentucky etc.), because the British promised the area to the Native Americans. And may I note the Colonists actually considered themselves to be British.