Which of the following best explains why Parliament repealed the Stamp Act in 1766? Parliament agreed with the colonists that the act was unfair. Colonial legislators were threatening to impose their own taxes. Colonists’ boycotts of British goods were hurting British trade. The British passed the Declaratory Act, which replaced it with a heavier tax.

the use of email to replace slower surface mail.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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the speech convinced americans that the ussr was an enemy, rather than an ally, which led to the creation of the truman doctrine.