Historical Background o The war had plunged(投入)the British government deep into debt,and so Parliament enacted(制定)'a series of measures to increase tax revenue (税收)from the colonies.Parliament believed that these acts,such as the Stamp Act of 1765 and the Townshend Acts of1767,were a legitimate(合法) means of having the colonies pay their fair share of the costs to keep the colonies in the British Empire