Why did the attitude of americans change concerning the vietnam war

According to the qianlong emperor, why was china not interested in importing anything else?

What was gained through the gadsden purchase

How did the boston massacre contribute to the writing of the declaration of independence? a. many colonists began to see the british government as a source of protection. b. many colonists began to see the british government as a supporter of free speech. c. many colonists began to oppose the british government's building of forts on the frontier. d. many colonists began to fear the british government's harsh actions toward the colonies.