I found this -
Although resented, the Sugar Act tax was hidden in the cost of import duties, and most colonists accepted it. The Stamp Act, however, was a direct tax on the colonists and led to an uproar in America over an issue that was to be a major cause of the Revolution: taxation without representation.
The Intolerable Acts were a series of laws passed by the British Parliament in the mid-1770s. The British instated the acts to make an example of the colonies after the Boston Tea Party, and the outrage they caused became the major push that led to the outbreak American Revolution in 1775.
