Which is the best definition for the term "american frontier"? a) a fixed boundary line b) the atlantic or pacific coastline c) the territory gained in the gadsden purchase d) a shifting area where pioneer settlement ended

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.